Home / 103,489.20-155,233.80-75,604.95

Finding the Fourth Proportional to 103,489.20, 155,233.80 and 75,604.95

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Solution

The fourth proportional to 103,489.20, 155,233.80 and 75,604.95 is: 113,407.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,489.20 : 155,233.80 = 75,604.95 : x
  2. Step 2: Convert to fraction form
    103,489.20/155,233.80 = 75,604.95/x
  3. Step 3: Cross multiply
    103,489.20x = 155,233.80 × 75,604.95
  4. Step 4: Simplify right side
    103,489.20x = 11,736,443,687.31
  5. Step 5: Solve for x
    x = 11,736,443,687.31/103,489.20
  6. Step 6: Final answer
    x = 113,407.43

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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.