Home / 138,054.78-207,086.76-38,206.62

Finding the Fourth Proportional to 138,054.78, 207,086.76 and 38,206.62

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Solution

The fourth proportional to 138,054.78, 207,086.76 and 38,206.62 is: 57,311.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,054.78 : 207,086.76 = 38,206.62 : x
  2. Step 2: Convert to fraction form
    138,054.78/207,086.76 = 38,206.62/x
  3. Step 3: Cross multiply
    138,054.78x = 207,086.76 × 38,206.62
  4. Step 4: Simplify right side
    138,054.78x = 7,912,085,146.35
  5. Step 5: Solve for x
    x = 7,912,085,146.35/138,054.78
  6. Step 6: Final answer
    x = 57,311.20

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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.