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Finding the Fourth Proportional to 156,989.52, 216,651.24 and 89,934.48

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Solution

The fourth proportional to 156,989.52, 216,651.24 and 89,934.48 is: 124,112.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,989.52 : 216,651.24 = 89,934.48 : x
  2. Step 2: Convert to fraction form
    156,989.52/216,651.24 = 89,934.48/x
  3. Step 3: Cross multiply
    156,989.52x = 216,651.24 × 89,934.48
  4. Step 4: Simplify right side
    156,989.52x = 19,484,416,610.76
  5. Step 5: Solve for x
    x = 19,484,416,610.76/156,989.52
  6. Step 6: Final answer
    x = 124,112.85

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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.