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Finding the Fourth Proportional to 144,787.60, 217,008.60 and 74,630.80

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Solution

The fourth proportional to 144,787.60, 217,008.60 and 74,630.80 is: 111,857.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,787.60 : 217,008.60 = 74,630.80 : x
  2. Step 2: Convert to fraction form
    144,787.60/217,008.60 = 74,630.80/x
  3. Step 3: Cross multiply
    144,787.60x = 217,008.60 × 74,630.80
  4. Step 4: Simplify right side
    144,787.60x = 16,195,525,424.88
  5. Step 5: Solve for x
    x = 16,195,525,424.88/144,787.60
  6. Step 6: Final answer
    x = 111,857.13

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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.