Home / 103,633.10-155,449.65-68,612.30

Finding the Fourth Proportional to 103,633.10, 155,449.65 and 68,612.30

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Solution

The fourth proportional to 103,633.10, 155,449.65 and 68,612.30 is: 102,918.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,633.10 : 155,449.65 = 68,612.30 : x
  2. Step 2: Convert to fraction form
    103,633.10/155,449.65 = 68,612.30/x
  3. Step 3: Cross multiply
    103,633.10x = 155,449.65 × 68,612.30
  4. Step 4: Simplify right side
    103,633.10x = 10,665,758,020.70
  5. Step 5: Solve for x
    x = 10,665,758,020.70/103,633.10
  6. Step 6: Final answer
    x = 102,918.45

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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.