Home / 103,439.91-155,034.45-47,202.96

Finding the Fourth Proportional to 103,439.91, 155,034.45 and 47,202.96

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Solution

The fourth proportional to 103,439.91, 155,034.45 and 47,202.96 is: 70,747.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,439.91 : 155,034.45 = 47,202.96 : x
  2. Step 2: Convert to fraction form
    103,439.91/155,034.45 = 47,202.96/x
  3. Step 3: Cross multiply
    103,439.91x = 155,034.45 × 47,202.96
  4. Step 4: Simplify right side
    103,439.91x = 7,318,084,941.97
  5. Step 5: Solve for x
    x = 7,318,084,941.97/103,439.91
  6. Step 6: Final answer
    x = 70,747.21

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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.