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Finding the Fourth Proportional to 144,799.20, 217,393.20 and 92,440.80

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Solution

The fourth proportional to 144,799.20, 217,393.20 and 92,440.80 is: 138,785.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,799.20 : 217,393.20 = 92,440.80 : x
  2. Step 2: Convert to fraction form
    144,799.20/217,393.20 = 92,440.80/x
  3. Step 3: Cross multiply
    144,799.20x = 217,393.20 × 92,440.80
  4. Step 4: Simplify right side
    144,799.20x = 20,096,001,322.56
  5. Step 5: Solve for x
    x = 20,096,001,322.56/144,799.20
  6. Step 6: Final answer
    x = 138,785.31

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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.