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Finding the Fourth Proportional to 138,324.60, 207,486.90 and 126,952.20

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Solution

The fourth proportional to 138,324.60, 207,486.90 and 126,952.20 is: 190,428.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,324.60 : 207,486.90 = 126,952.20 : x
  2. Step 2: Convert to fraction form
    138,324.60/207,486.90 = 126,952.20/x
  3. Step 3: Cross multiply
    138,324.60x = 207,486.90 × 126,952.20
  4. Step 4: Simplify right side
    138,324.60x = 26,340,918,426.18
  5. Step 5: Solve for x
    x = 26,340,918,426.18/138,324.60
  6. Step 6: Final answer
    x = 190,428.30

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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.