Home / 136,147.46-204,221.28-42,660.50

Finding the Fourth Proportional to 136,147.46, 204,221.28 and 42,660.50

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Solution

The fourth proportional to 136,147.46, 204,221.28 and 42,660.50 is: 63,990.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,147.46 : 204,221.28 = 42,660.50 : x
  2. Step 2: Convert to fraction form
    136,147.46/204,221.28 = 42,660.50/x
  3. Step 3: Cross multiply
    136,147.46x = 204,221.28 × 42,660.50
  4. Step 4: Simplify right side
    136,147.46x = 8,712,181,915.44
  5. Step 5: Solve for x
    x = 8,712,181,915.44/136,147.46
  6. Step 6: Final answer
    x = 63,990.78

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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.