Home / 103,630.18-155,445.19-28,769.17

Finding the Fourth Proportional to 103,630.18, 155,445.19 and 28,769.17

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Solution

The fourth proportional to 103,630.18, 155,445.19 and 28,769.17 is: 43,153.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,630.18 : 155,445.19 = 28,769.17 : x
  2. Step 2: Convert to fraction form
    103,630.18/155,445.19 = 28,769.17/x
  3. Step 3: Cross multiply
    103,630.18x = 155,445.19 × 28,769.17
  4. Step 4: Simplify right side
    103,630.18x = 4,472,029,096.79
  5. Step 5: Solve for x
    x = 4,472,029,096.79/103,630.18
  6. Step 6: Final answer
    x = 43,153.73

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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.