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Finding the Fourth Proportional to 144,493.20, 216,739.80 and 92,134.80

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Solution

The fourth proportional to 144,493.20, 216,739.80 and 92,134.80 is: 138,202.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,493.20 : 216,739.80 = 92,134.80 : x
  2. Step 2: Convert to fraction form
    144,493.20/216,739.80 = 92,134.80/x
  3. Step 3: Cross multiply
    144,493.20x = 216,739.80 × 92,134.80
  4. Step 4: Simplify right side
    144,493.20x = 19,969,278,125.04
  5. Step 5: Solve for x
    x = 19,969,278,125.04/144,493.20
  6. Step 6: Final answer
    x = 138,202.20

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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.