Home / 125,686.05-188,422.85-54,554.90

Finding the Fourth Proportional to 125,686.05, 188,422.85 and 54,554.90

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Solution

The fourth proportional to 125,686.05, 188,422.85 and 54,554.90 is: 81,786.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,686.05 : 188,422.85 = 54,554.90 : x
  2. Step 2: Convert to fraction form
    125,686.05/188,422.85 = 54,554.90/x
  3. Step 3: Cross multiply
    125,686.05x = 188,422.85 × 54,554.90
  4. Step 4: Simplify right side
    125,686.05x = 10,279,388,524.58
  5. Step 5: Solve for x
    x = 10,279,388,524.58/125,686.05
  6. Step 6: Final answer
    x = 81,786.23

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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.