Home / 136,179.66-187,851.18-81,717.74

Finding the Fourth Proportional to 136,179.66, 187,851.18 and 81,717.74

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Solution

The fourth proportional to 136,179.66, 187,851.18 and 81,717.74 is: 112,724.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,179.66 : 187,851.18 = 81,717.74 : x
  2. Step 2: Convert to fraction form
    136,179.66/187,851.18 = 81,717.74/x
  3. Step 3: Cross multiply
    136,179.66x = 187,851.18 × 81,717.74
  4. Step 4: Simplify right side
    136,179.66x = 15,350,773,885.93
  5. Step 5: Solve for x
    x = 15,350,773,885.93/136,179.66
  6. Step 6: Final answer
    x = 112,724.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.