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Finding the Fourth Proportional to 99,524.80, 149,287.20 and 79,841.80

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Solution

The fourth proportional to 99,524.80, 149,287.20 and 79,841.80 is: 119,762.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,524.80 : 149,287.20 = 79,841.80 : x
  2. Step 2: Convert to fraction form
    99,524.80/149,287.20 = 79,841.80/x
  3. Step 3: Cross multiply
    99,524.80x = 149,287.20 × 79,841.80
  4. Step 4: Simplify right side
    99,524.80x = 11,919,358,764.96
  5. Step 5: Solve for x
    x = 11,919,358,764.96/99,524.80
  6. Step 6: Final answer
    x = 119,762.70

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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.