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Finding the Fourth Proportional to 156,374.77, 215,793.70 and 88,382.70

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Solution

The fourth proportional to 156,374.77, 215,793.70 and 88,382.70 is: 121,966.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,374.77 : 215,793.70 = 88,382.70 : x
  2. Step 2: Convert to fraction form
    156,374.77/215,793.70 = 88,382.70/x
  3. Step 3: Cross multiply
    156,374.77x = 215,793.70 × 88,382.70
  4. Step 4: Simplify right side
    156,374.77x = 19,072,429,848.99
  5. Step 5: Solve for x
    x = 19,072,429,848.99/156,374.77
  6. Step 6: Final answer
    x = 121,966.16

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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.