Home / 138,016.06-207,061.80-49,278.58

Finding the Fourth Proportional to 138,016.06, 207,061.80 and 49,278.58

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Solution

The fourth proportional to 138,016.06, 207,061.80 and 49,278.58 is: 73,931.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,016.06 : 207,061.80 = 49,278.58 : x
  2. Step 2: Convert to fraction form
    138,016.06/207,061.80 = 49,278.58/x
  3. Step 3: Cross multiply
    138,016.06x = 207,061.80 × 49,278.58
  4. Step 4: Simplify right side
    138,016.06x = 10,203,711,476.24
  5. Step 5: Solve for x
    x = 10,203,711,476.24/138,016.06
  6. Step 6: Final answer
    x = 73,931.33

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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.