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Finding the Fourth Proportional to 100,442.52, 150,760.98 and 73,870.20

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Solution

The fourth proportional to 100,442.52, 150,760.98 and 73,870.20 is: 110,876.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,442.52 : 150,760.98 = 73,870.20 : x
  2. Step 2: Convert to fraction form
    100,442.52/150,760.98 = 73,870.20/x
  3. Step 3: Cross multiply
    100,442.52x = 150,760.98 × 73,870.20
  4. Step 4: Simplify right side
    100,442.52x = 11,136,743,744.80
  5. Step 5: Solve for x
    x = 11,136,743,744.80/100,442.52
  6. Step 6: Final answer
    x = 110,876.79

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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.