Home / 138,916.13-208,375.23-39,086.42

Finding the Fourth Proportional to 138,916.13, 208,375.23 and 39,086.42

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Solution

The fourth proportional to 138,916.13, 208,375.23 and 39,086.42 is: 58,629.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,916.13 : 208,375.23 = 39,086.42 : x
  2. Step 2: Convert to fraction form
    138,916.13/208,375.23 = 39,086.42/x
  3. Step 3: Cross multiply
    138,916.13x = 208,375.23 × 39,086.42
  4. Step 4: Simplify right side
    138,916.13x = 8,144,642,424.89
  5. Step 5: Solve for x
    x = 8,144,642,424.89/138,916.13
  6. Step 6: Final answer
    x = 58,629.92

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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.