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Finding the Fourth Proportional to 156,560, 216,052.80 and 89,493.44

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Solution

The fourth proportional to 156,560, 216,052.80 and 89,493.44 is: 123,500.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,560 : 216,052.80 = 89,493.44 : x
  2. Step 2: Convert to fraction form
    156,560/216,052.80 = 89,493.44/x
  3. Step 3: Cross multiply
    156,560x = 216,052.80 × 89,493.44
  4. Step 4: Simplify right side
    156,560x = 19,335,308,293.63
  5. Step 5: Solve for x
    x = 19,335,308,293.63/156,560
  6. Step 6: Final answer
    x = 123,500.95

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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.