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Finding the Fourth Proportional to 103,429.70, 155,221.35 and 41,144.90

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Solution

The fourth proportional to 103,429.70, 155,221.35 and 41,144.90 is: 61,747.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,429.70 : 155,221.35 = 41,144.90 : x
  2. Step 2: Convert to fraction form
    103,429.70/155,221.35 = 41,144.90/x
  3. Step 3: Cross multiply
    103,429.70x = 155,221.35 × 41,144.90
  4. Step 4: Simplify right side
    103,429.70x = 6,386,566,923.62
  5. Step 5: Solve for x
    x = 6,386,566,923.62/103,429.70
  6. Step 6: Final answer
    x = 61,747.90

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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.