Home / 138,718.06-208,115.97-55,670.38

Finding the Fourth Proportional to 138,718.06, 208,115.97 and 55,670.38

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Solution

The fourth proportional to 138,718.06, 208,115.97 and 55,670.38 is: 83,521.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,718.06 : 208,115.97 = 55,670.38 : x
  2. Step 2: Convert to fraction form
    138,718.06/208,115.97 = 55,670.38/x
  3. Step 3: Cross multiply
    138,718.06x = 208,115.97 × 55,670.38
  4. Step 4: Simplify right side
    138,718.06x = 11,585,895,133.97
  5. Step 5: Solve for x
    x = 11,585,895,133.97/138,718.06
  6. Step 6: Final answer
    x = 83,521.17

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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.