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Finding the Fourth Proportional to 138,073.41, 207,086.62 and 38,210.21

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Solution

The fourth proportional to 138,073.41, 207,086.62 and 38,210.21 is: 57,308.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,073.41 : 207,086.62 = 38,210.21 : x
  2. Step 2: Convert to fraction form
    138,073.41/207,086.62 = 38,210.21/x
  3. Step 3: Cross multiply
    138,073.41x = 207,086.62 × 38,210.21
  4. Step 4: Simplify right side
    138,073.41x = 7,912,822,107.43
  5. Step 5: Solve for x
    x = 7,912,822,107.43/138,073.41
  6. Step 6: Final answer
    x = 57,308.80

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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.