Home / 137,589.90-206,190.45-84,842.70

Finding the Fourth Proportional to 137,589.90, 206,190.45 and 84,842.70

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Solution

The fourth proportional to 137,589.90, 206,190.45 and 84,842.70 is: 127,144.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,589.90 : 206,190.45 = 84,842.70 : x
  2. Step 2: Convert to fraction form
    137,589.90/206,190.45 = 84,842.70/x
  3. Step 3: Cross multiply
    137,589.90x = 206,190.45 × 84,842.70
  4. Step 4: Simplify right side
    137,589.90x = 17,493,754,492.22
  5. Step 5: Solve for x
    x = 17,493,754,492.22/137,589.90
  6. Step 6: Final answer
    x = 127,144.18

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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.