Home / 138,569.61-207,836.55-43,809.42

Finding the Fourth Proportional to 138,569.61, 207,836.55 and 43,809.42

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Solution

The fourth proportional to 138,569.61, 207,836.55 and 43,809.42 is: 65,708.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,569.61 : 207,836.55 = 43,809.42 : x
  2. Step 2: Convert to fraction form
    138,569.61/207,836.55 = 43,809.42/x
  3. Step 3: Cross multiply
    138,569.61x = 207,836.55 × 43,809.42
  4. Step 4: Simplify right side
    138,569.61x = 9,105,198,428.06
  5. Step 5: Solve for x
    x = 9,105,198,428.06/138,569.61
  6. Step 6: Final answer
    x = 65,708.48

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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.