Home / 125,429.45-188,136.89-91,729.61

Finding the Fourth Proportional to 125,429.45, 188,136.89 and 91,729.61

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Solution

The fourth proportional to 125,429.45, 188,136.89 and 91,729.61 is: 137,589.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,429.45 : 188,136.89 = 91,729.61 : x
  2. Step 2: Convert to fraction form
    125,429.45/188,136.89 = 91,729.61/x
  3. Step 3: Cross multiply
    125,429.45x = 188,136.89 × 91,729.61
  4. Step 4: Simplify right side
    125,429.45x = 17,257,722,146.98
  5. Step 5: Solve for x
    x = 17,257,722,146.98/125,429.45
  6. Step 6: Final answer
    x = 137,589.07

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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.