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Finding the Fourth Proportional to 168,508.80, 252,655.20 and 79,646.40

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Solution

The fourth proportional to 168,508.80, 252,655.20 and 79,646.40 is: 119,418.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,508.80 : 252,655.20 = 79,646.40 : x
  2. Step 2: Convert to fraction form
    168,508.80/252,655.20 = 79,646.40/x
  3. Step 3: Cross multiply
    168,508.80x = 252,655.20 × 79,646.40
  4. Step 4: Simplify right side
    168,508.80x = 20,123,077,121.28
  5. Step 5: Solve for x
    x = 20,123,077,121.28/168,508.80
  6. Step 6: Final answer
    x = 119,418.55

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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.