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Finding the Fourth Proportional to 125,097.31, 172,591.44 and 71,343.68

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Solution

The fourth proportional to 125,097.31, 172,591.44 and 71,343.68 is: 98,429.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,097.31 : 172,591.44 = 71,343.68 : x
  2. Step 2: Convert to fraction form
    125,097.31/172,591.44 = 71,343.68/x
  3. Step 3: Cross multiply
    125,097.31x = 172,591.44 × 71,343.68
  4. Step 4: Simplify right side
    125,097.31x = 12,313,308,466.10
  5. Step 5: Solve for x
    x = 12,313,308,466.10/125,097.31
  6. Step 6: Final answer
    x = 98,429.85

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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.