Home / 99,712.38-149,737.86-66,644.94

Finding the Fourth Proportional to 99,712.38, 149,737.86 and 66,644.94

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Solution

The fourth proportional to 99,712.38, 149,737.86 and 66,644.94 is: 100,080.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,712.38 : 149,737.86 = 66,644.94 : x
  2. Step 2: Convert to fraction form
    99,712.38/149,737.86 = 66,644.94/x
  3. Step 3: Cross multiply
    99,712.38x = 149,737.86 × 66,644.94
  4. Step 4: Simplify right side
    99,712.38x = 9,979,270,695.43
  5. Step 5: Solve for x
    x = 9,979,270,695.43/99,712.38
  6. Step 6: Final answer
    x = 100,080.56

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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.