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Finding the Fourth Proportional to 156,503.48, 215,979.69 and 88,519.12

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Solution

The fourth proportional to 156,503.48, 215,979.69 and 88,519.12 is: 122,159.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,503.48 : 215,979.69 = 88,519.12 : x
  2. Step 2: Convert to fraction form
    156,503.48/215,979.69 = 88,519.12/x
  3. Step 3: Cross multiply
    156,503.48x = 215,979.69 × 88,519.12
  4. Step 4: Simplify right side
    156,503.48x = 19,118,332,096.67
  5. Step 5: Solve for x
    x = 19,118,332,096.67/156,503.48
  6. Step 6: Final answer
    x = 122,159.15

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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.