Home / 138,176.25-206,835.33-74,839.06

Finding the Fourth Proportional to 138,176.25, 206,835.33 and 74,839.06

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Solution

The fourth proportional to 138,176.25, 206,835.33 and 74,839.06 is: 112,026.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,176.25 : 206,835.33 = 74,839.06 : x
  2. Step 2: Convert to fraction form
    138,176.25/206,835.33 = 74,839.06/x
  3. Step 3: Cross multiply
    138,176.25x = 206,835.33 × 74,839.06
  4. Step 4: Simplify right side
    138,176.25x = 15,479,361,297.79
  5. Step 5: Solve for x
    x = 15,479,361,297.79/138,176.25
  6. Step 6: Final answer
    x = 112,026.21

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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.