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Finding the Fourth Proportional to 144,332.84, 216,695.60 and 81,197.39

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Solution

The fourth proportional to 144,332.84, 216,695.60 and 81,197.39 is: 121,906.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,332.84 : 216,695.60 = 81,197.39 : x
  2. Step 2: Convert to fraction form
    144,332.84/216,695.60 = 81,197.39/x
  3. Step 3: Cross multiply
    144,332.84x = 216,695.60 × 81,197.39
  4. Step 4: Simplify right side
    144,332.84x = 17,595,117,280.24
  5. Step 5: Solve for x
    x = 17,595,117,280.24/144,332.84
  6. Step 6: Final answer
    x = 121,906.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.