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Finding the Fourth Proportional to 156,985.97, 216,576.72 and 88,988.54

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Solution

The fourth proportional to 156,985.97, 216,576.72 and 88,988.54 is: 122,767.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,985.97 : 216,576.72 = 88,988.54 : x
  2. Step 2: Convert to fraction form
    156,985.97/216,576.72 = 88,988.54/x
  3. Step 3: Cross multiply
    156,985.97x = 216,576.72 × 88,988.54
  4. Step 4: Simplify right side
    156,985.97x = 19,272,845,027.91
  5. Step 5: Solve for x
    x = 19,272,845,027.91/156,985.97
  6. Step 6: Final answer
    x = 122,767.95

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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.