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Finding the Fourth Proportional to 170,451.92, 255,654.16 and 90,454.88

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Solution

The fourth proportional to 170,451.92, 255,654.16 and 90,454.88 is: 135,669.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,451.92 : 255,654.16 = 90,454.88 : x
  2. Step 2: Convert to fraction form
    170,451.92/255,654.16 = 90,454.88/x
  3. Step 3: Cross multiply
    170,451.92x = 255,654.16 × 90,454.88
  4. Step 4: Simplify right side
    170,451.92x = 23,125,166,364.30
  5. Step 5: Solve for x
    x = 23,125,166,364.30/170,451.92
  6. Step 6: Final answer
    x = 135,669.73

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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.