Home / 137,920.56-206,876.70-38,086.84

Finding the Fourth Proportional to 137,920.56, 206,876.70 and 38,086.84

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Solution

The fourth proportional to 137,920.56, 206,876.70 and 38,086.84 is: 57,129.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,920.56 : 206,876.70 = 38,086.84 : x
  2. Step 2: Convert to fraction form
    137,920.56/206,876.70 = 38,086.84/x
  3. Step 3: Cross multiply
    137,920.56x = 206,876.70 × 38,086.84
  4. Step 4: Simplify right side
    137,920.56x = 7,879,279,772.63
  5. Step 5: Solve for x
    x = 7,879,279,772.63/137,920.56
  6. Step 6: Final answer
    x = 57,129.12

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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.