Home / 99,134.28-136,801.62-56,691.72

Finding the Fourth Proportional to 99,134.28, 136,801.62 and 56,691.72

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Solution

The fourth proportional to 99,134.28, 136,801.62 and 56,691.72 is: 78,232.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,134.28 : 136,801.62 = 56,691.72 : x
  2. Step 2: Convert to fraction form
    99,134.28/136,801.62 = 56,691.72/x
  3. Step 3: Cross multiply
    99,134.28x = 136,801.62 × 56,691.72
  4. Step 4: Simplify right side
    99,134.28x = 7,755,519,136.59
  5. Step 5: Solve for x
    x = 7,755,519,136.59/99,134.28
  6. Step 6: Final answer
    x = 78,232.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.