Home / 103,489.10-155,233.65-68,059.70

Finding the Fourth Proportional to 103,489.10, 155,233.65 and 68,059.70

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Solution

The fourth proportional to 103,489.10, 155,233.65 and 68,059.70 is: 102,089.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,489.10 : 155,233.65 = 68,059.70 : x
  2. Step 2: Convert to fraction form
    103,489.10/155,233.65 = 68,059.70/x
  3. Step 3: Cross multiply
    103,489.10x = 155,233.65 × 68,059.70
  4. Step 4: Simplify right side
    103,489.10x = 10,565,155,648.91
  5. Step 5: Solve for x
    x = 10,565,155,648.91/103,489.10
  6. Step 6: Final answer
    x = 102,089.55

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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.