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Finding the Fourth Proportional to 145,609.53, 218,414.06 and 45,778.44

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Solution

The fourth proportional to 145,609.53, 218,414.06 and 45,778.44 is: 68,667.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,609.53 : 218,414.06 = 45,778.44 : x
  2. Step 2: Convert to fraction form
    145,609.53/218,414.06 = 45,778.44/x
  3. Step 3: Cross multiply
    145,609.53x = 218,414.06 × 45,778.44
  4. Step 4: Simplify right side
    145,609.53x = 9,998,654,711.97
  5. Step 5: Solve for x
    x = 9,998,654,711.97/145,609.53
  6. Step 6: Final answer
    x = 68,667.58

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1.5x scale

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.