Home / 138,728.28-191,374.47-84,265.95

Finding the Fourth Proportional to 138,728.28, 191,374.47 and 84,265.95

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Solution

The fourth proportional to 138,728.28, 191,374.47 and 84,265.95 is: 116,244.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,728.28 : 191,374.47 = 84,265.95 : x
  2. Step 2: Convert to fraction form
    138,728.28/191,374.47 = 84,265.95/x
  3. Step 3: Cross multiply
    138,728.28x = 191,374.47 × 84,265.95
  4. Step 4: Simplify right side
    138,728.28x = 16,126,351,520.30
  5. Step 5: Solve for x
    x = 16,126,351,520.30/138,728.28
  6. Step 6: Final answer
    x = 116,244.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.