Home / 103,611,312,005.70-155,416,968,008.55-86,874,746,880.90

Finding the Fourth Proportional to 103,611,312,005.70, 155,416,968,008.55 and 86,874,746,880.90

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Solution

The fourth proportional to 103,611,312,005.70, 155,416,968,008.55 and 86,874,746,880.90 is: 130,312,120,321.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,611,312,005.70 : 155,416,968,008.55 = 86,874,746,880.90 : x
  2. Step 2: Convert to fraction form
    103,611,312,005.70/155,416,968,008.55 = 86,874,746,880.90/x
  3. Step 3: Cross multiply
    103,611,312,005.70x = 155,416,968,008.55 × 86,874,746,880.90
  4. Step 4: Simplify right side
    103,611,312,005.70x = 13,501,809,756,739,712,581,632
  5. Step 5: Solve for x
    x = 13,501,809,756,739,712,581,632/103,611,312,005.70
  6. Step 6: Final answer
    x = 130,312,120,321.35

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.