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Finding the Fourth Proportional to 168,458.40, 252,979.20 and 89,726.40

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Solution

The fourth proportional to 168,458.40, 252,979.20 and 89,726.40 is: 134,744.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,458.40 : 252,979.20 = 89,726.40 : x
  2. Step 2: Convert to fraction form
    168,458.40/252,979.20 = 89,726.40/x
  3. Step 3: Cross multiply
    168,458.40x = 252,979.20 × 89,726.40
  4. Step 4: Simplify right side
    168,458.40x = 22,698,912,890.88
  5. Step 5: Solve for x
    x = 22,698,912,890.88/168,458.40
  6. Step 6: Final answer
    x = 134,744.92

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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.