Home / 140,915.10-211,560.30-81,793.20

Finding the Fourth Proportional to 140,915.10, 211,560.30 and 81,793.20

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Solution

The fourth proportional to 140,915.10, 211,560.30 and 81,793.20 is: 122,798.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,915.10 : 211,560.30 = 81,793.20 : x
  2. Step 2: Convert to fraction form
    140,915.10/211,560.30 = 81,793.20/x
  3. Step 3: Cross multiply
    140,915.10x = 211,560.30 × 81,793.20
  4. Step 4: Simplify right side
    140,915.10x = 17,304,193,929.96
  5. Step 5: Solve for x
    x = 17,304,193,929.96/140,915.10
  6. Step 6: Final answer
    x = 122,798.72

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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.