Home / 125,382.57-188,104.23-72,108.65

Finding the Fourth Proportional to 125,382.57, 188,104.23 and 72,108.65

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Solution

The fourth proportional to 125,382.57, 188,104.23 and 72,108.65 is: 108,180.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,382.57 : 188,104.23 = 72,108.65 : x
  2. Step 2: Convert to fraction form
    125,382.57/188,104.23 = 72,108.65/x
  3. Step 3: Cross multiply
    125,382.57x = 188,104.23 × 72,108.65
  4. Step 4: Simplify right side
    125,382.57x = 13,563,941,144.07
  5. Step 5: Solve for x
    x = 13,563,941,144.07/125,382.57
  6. Step 6: Final answer
    x = 108,180.44

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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.