Home / 112,538.36-155,229.68-72,188.21

Finding the Fourth Proportional to 112,538.36, 155,229.68 and 72,188.21

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Solution

The fourth proportional to 112,538.36, 155,229.68 and 72,188.21 is: 99,572.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,538.36 : 155,229.68 = 72,188.21 : x
  2. Step 2: Convert to fraction form
    112,538.36/155,229.68 = 72,188.21/x
  3. Step 3: Cross multiply
    112,538.36x = 155,229.68 × 72,188.21
  4. Step 4: Simplify right side
    112,538.36x = 11,205,753,306.62
  5. Step 5: Solve for x
    x = 11,205,753,306.62/112,538.36
  6. Step 6: Final answer
    x = 99,572.74

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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.