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Finding the Fourth Proportional to 99,957.81, 149,862.65 and 60,505.59

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Solution

The fourth proportional to 99,957.81, 149,862.65 and 60,505.59 is: 90,713.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,957.81 : 149,862.65 = 60,505.59 : x
  2. Step 2: Convert to fraction form
    99,957.81/149,862.65 = 60,505.59/x
  3. Step 3: Cross multiply
    99,957.81x = 149,862.65 × 60,505.59
  4. Step 4: Simplify right side
    99,957.81x = 9,067,527,754.69
  5. Step 5: Solve for x
    x = 9,067,527,754.69/99,957.81
  6. Step 6: Final answer
    x = 90,713.55

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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.