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Finding the Fourth Proportional to 156,552, 216,041.76 and 89,485.44

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Solution

The fourth proportional to 156,552, 216,041.76 and 89,485.44 is: 123,489.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,552 : 216,041.76 = 89,485.44 : x
  2. Step 2: Convert to fraction form
    156,552/216,041.76 = 89,485.44/x
  3. Step 3: Cross multiply
    156,552x = 216,041.76 × 89,485.44
  4. Step 4: Simplify right side
    156,552x = 19,332,591,951.97
  5. Step 5: Solve for x
    x = 19,332,591,951.97/156,552
  6. Step 6: Final answer
    x = 123,489.91

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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.