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Finding the Fourth Proportional to 138,354.97, 207,210.66 and 133,560.47

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Solution

The fourth proportional to 138,354.97, 207,210.66 and 133,560.47 is: 200,030.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,354.97 : 207,210.66 = 133,560.47 : x
  2. Step 2: Convert to fraction form
    138,354.97/207,210.66 = 133,560.47/x
  3. Step 3: Cross multiply
    138,354.97x = 207,210.66 × 133,560.47
  4. Step 4: Simplify right side
    138,354.97x = 27,675,152,573.01
  5. Step 5: Solve for x
    x = 27,675,152,573.01/138,354.97
  6. Step 6: Final answer
    x = 200,030.05

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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.