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Finding the Fourth Proportional to 138,184.80, 207,277.20 and 127,687.20

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Solution

The fourth proportional to 138,184.80, 207,277.20 and 127,687.20 is: 191,530.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,184.80 : 207,277.20 = 127,687.20 : x
  2. Step 2: Convert to fraction form
    138,184.80/207,277.20 = 127,687.20/x
  3. Step 3: Cross multiply
    138,184.80x = 207,277.20 × 127,687.20
  4. Step 4: Simplify right side
    138,184.80x = 26,466,645,291.84
  5. Step 5: Solve for x
    x = 26,466,645,291.84/138,184.80
  6. Step 6: Final answer
    x = 191,530.80

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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.