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Finding the Fourth Proportional to 112,737.92, 155,572.76 and 61,750.88

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Solution

The fourth proportional to 112,737.92, 155,572.76 and 61,750.88 is: 85,213.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,737.92 : 155,572.76 = 61,750.88 : x
  2. Step 2: Convert to fraction form
    112,737.92/155,572.76 = 61,750.88/x
  3. Step 3: Cross multiply
    112,737.92x = 155,572.76 × 61,750.88
  4. Step 4: Simplify right side
    112,737.92x = 9,606,754,210.54
  5. Step 5: Solve for x
    x = 9,606,754,210.54/112,737.92
  6. Step 6: Final answer
    x = 85,213.16

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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.