Home / 100,084.90-138,097.98-57,063.58

Finding the Fourth Proportional to 100,084.90, 138,097.98 and 57,063.58

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Solution

The fourth proportional to 100,084.90, 138,097.98 and 57,063.58 is: 78,736.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,084.90 : 138,097.98 = 57,063.58 : x
  2. Step 2: Convert to fraction form
    100,084.90/138,097.98 = 57,063.58/x
  3. Step 3: Cross multiply
    100,084.90x = 138,097.98 × 57,063.58
  4. Step 4: Simplify right side
    100,084.90x = 7,880,365,129.57
  5. Step 5: Solve for x
    x = 7,880,365,129.57/100,084.90
  6. Step 6: Final answer
    x = 78,736.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.