Home / 137,780.50-206,478.30-74,464.14

Finding the Fourth Proportional to 137,780.50, 206,478.30 and 74,464.14

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Solution

The fourth proportional to 137,780.50, 206,478.30 and 74,464.14 is: 111,592.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,780.50 : 206,478.30 = 74,464.14 : x
  2. Step 2: Convert to fraction form
    137,780.50/206,478.30 = 74,464.14/x
  3. Step 3: Cross multiply
    137,780.50x = 206,478.30 × 74,464.14
  4. Step 4: Simplify right side
    137,780.50x = 15,375,229,038.16
  5. Step 5: Solve for x
    x = 15,375,229,038.16/137,780.50
  6. Step 6: Final answer
    x = 111,592.20

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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.