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Finding the Fourth Proportional to 156,615.68, 216,092.16 and 89,530.88

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Solution

The fourth proportional to 156,615.68, 216,092.16 and 89,530.88 is: 123,531.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,615.68 : 216,092.16 = 89,530.88 : x
  2. Step 2: Convert to fraction form
    156,615.68/216,092.16 = 89,530.88/x
  3. Step 3: Cross multiply
    156,615.68x = 216,092.16 × 89,530.88
  4. Step 4: Simplify right side
    156,615.68x = 19,346,921,245.90
  5. Step 5: Solve for x
    x = 19,346,921,245.90/156,615.68
  6. Step 6: Final answer
    x = 123,531.19

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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.