Home / 136,121.78-187,848.21-75,691.13

Finding the Fourth Proportional to 136,121.78, 187,848.21 and 75,691.13

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Solution

The fourth proportional to 136,121.78, 187,848.21 and 75,691.13 is: 104,453.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,121.78 : 187,848.21 = 75,691.13 : x
  2. Step 2: Convert to fraction form
    136,121.78/187,848.21 = 75,691.13/x
  3. Step 3: Cross multiply
    136,121.78x = 187,848.21 × 75,691.13
  4. Step 4: Simplify right side
    136,121.78x = 14,218,442,344.14
  5. Step 5: Solve for x
    x = 14,218,442,344.14/136,121.78
  6. Step 6: Final answer
    x = 104,453.84

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1.5x scale

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.