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Finding the Fourth Proportional to 156,275.52, 215,659.44 and 89,207.52

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Solution

The fourth proportional to 156,275.52, 215,659.44 and 89,207.52 is: 123,105.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,275.52 : 215,659.44 = 89,207.52 : x
  2. Step 2: Convert to fraction form
    156,275.52/215,659.44 = 89,207.52/x
  3. Step 3: Cross multiply
    156,275.52x = 215,659.44 × 89,207.52
  4. Step 4: Simplify right side
    156,275.52x = 19,238,443,806.99
  5. Step 5: Solve for x
    x = 19,238,443,806.99/156,275.52
  6. Step 6: Final answer
    x = 123,105.93

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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.