Home / 138,959.41-208,420.66-39,127.38

Finding the Fourth Proportional to 138,959.41, 208,420.66 and 39,127.38

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Solution

The fourth proportional to 138,959.41, 208,420.66 and 39,127.38 is: 58,685.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,959.41 : 208,420.66 = 39,127.38 : x
  2. Step 2: Convert to fraction form
    138,959.41/208,420.66 = 39,127.38/x
  3. Step 3: Cross multiply
    138,959.41x = 208,420.66 × 39,127.38
  4. Step 4: Simplify right side
    138,959.41x = 8,154,954,168.03
  5. Step 5: Solve for x
    x = 8,154,954,168.03/138,959.41
  6. Step 6: Final answer
    x = 58,685.87

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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.