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Finding the Fourth Proportional to 99,315.60, 148,843.80 and 40,102.80

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Solution

The fourth proportional to 99,315.60, 148,843.80 and 40,102.80 is: 60,101.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,315.60 : 148,843.80 = 40,102.80 : x
  2. Step 2: Convert to fraction form
    99,315.60/148,843.80 = 40,102.80/x
  3. Step 3: Cross multiply
    99,315.60x = 148,843.80 × 40,102.80
  4. Step 4: Simplify right side
    99,315.60x = 5,969,053,142.64
  5. Step 5: Solve for x
    x = 5,969,053,142.64/99,315.60
  6. Step 6: Final answer
    x = 60,101.87

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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.