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Finding the Fourth Proportional to 144,311.76, 216,270.81 and 88,171.47

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Solution

The fourth proportional to 144,311.76, 216,270.81 and 88,171.47 is: 132,136.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,311.76 : 216,270.81 = 88,171.47 : x
  2. Step 2: Convert to fraction form
    144,311.76/216,270.81 = 88,171.47/x
  3. Step 3: Cross multiply
    144,311.76x = 216,270.81 × 88,171.47
  4. Step 4: Simplify right side
    144,311.76x = 19,068,915,235.79
  5. Step 5: Solve for x
    x = 19,068,915,235.79/144,311.76
  6. Step 6: Final answer
    x = 132,136.95

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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.