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Finding the Fourth Proportional to 99,460.80, 137,251.20 and 54,748.80

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Solution

The fourth proportional to 99,460.80, 137,251.20 and 54,748.80 is: 75,550.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,460.80 : 137,251.20 = 54,748.80 : x
  2. Step 2: Convert to fraction form
    99,460.80/137,251.20 = 54,748.80/x
  3. Step 3: Cross multiply
    99,460.80x = 137,251.20 × 54,748.80
  4. Step 4: Simplify right side
    99,460.80x = 7,514,338,498.56
  5. Step 5: Solve for x
    x = 7,514,338,498.56/99,460.80
  6. Step 6: Final answer
    x = 75,550.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.