Home / 146,787.39-220,289.22-66,915.72

Finding the Fourth Proportional to 146,787.39, 220,289.22 and 66,915.72

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Solution

The fourth proportional to 146,787.39, 220,289.22 and 66,915.72 is: 100,422.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,787.39 : 220,289.22 = 66,915.72 : x
  2. Step 2: Convert to fraction form
    146,787.39/220,289.22 = 66,915.72/x
  3. Step 3: Cross multiply
    146,787.39x = 220,289.22 × 66,915.72
  4. Step 4: Simplify right side
    146,787.39x = 14,740,811,764.54
  5. Step 5: Solve for x
    x = 14,740,811,764.54/146,787.39
  6. Step 6: Final answer
    x = 100,422.88

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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.