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Finding the Fourth Proportional to 156,989.73, 216,651.52 and 89,934.69

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Solution

The fourth proportional to 156,989.73, 216,651.52 and 89,934.69 is: 124,113.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,989.73 : 216,651.52 = 89,934.69 : x
  2. Step 2: Convert to fraction form
    156,989.73/216,651.52 = 89,934.69/x
  3. Step 3: Cross multiply
    156,989.73x = 216,651.52 × 89,934.69
  4. Step 4: Simplify right side
    156,989.73x = 19,484,486,205.97
  5. Step 5: Solve for x
    x = 19,484,486,205.97/156,989.73
  6. Step 6: Final answer
    x = 124,113.13

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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.