Home / 123,084.39-185,012.01-81,233.46

Finding the Fourth Proportional to 123,084.39, 185,012.01 and 81,233.46

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Solution

The fourth proportional to 123,084.39, 185,012.01 and 81,233.46 is: 122,104.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,084.39 : 185,012.01 = 81,233.46 : x
  2. Step 2: Convert to fraction form
    123,084.39/185,012.01 = 81,233.46/x
  3. Step 3: Cross multiply
    123,084.39x = 185,012.01 × 81,233.46
  4. Step 4: Simplify right side
    123,084.39x = 15,029,165,713.85
  5. Step 5: Solve for x
    x = 15,029,165,713.85/123,084.39
  6. Step 6: Final answer
    x = 122,104.56

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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.