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Finding the Fourth Proportional to 145,609.92, 218,324.19 and 61,326.57

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Solution

The fourth proportional to 145,609.92, 218,324.19 and 61,326.57 is: 91,951.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,609.92 : 218,324.19 = 61,326.57 : x
  2. Step 2: Convert to fraction form
    145,609.92/218,324.19 = 61,326.57/x
  3. Step 3: Cross multiply
    145,609.92x = 218,324.19 × 61,326.57
  4. Step 4: Simplify right side
    145,609.92x = 13,389,073,720.73
  5. Step 5: Solve for x
    x = 13,389,073,720.73/145,609.92
  6. Step 6: Final answer
    x = 91,951.66

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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.