Home / 115,724.45-173,306.36-80,085.90

Finding the Fourth Proportional to 115,724.45, 173,306.36 and 80,085.90

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Solution

The fourth proportional to 115,724.45, 173,306.36 and 80,085.90 is: 119,934.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,724.45 : 173,306.36 = 80,085.90 : x
  2. Step 2: Convert to fraction form
    115,724.45/173,306.36 = 80,085.90/x
  3. Step 3: Cross multiply
    115,724.45x = 173,306.36 × 80,085.90
  4. Step 4: Simplify right side
    115,724.45x = 13,879,395,816.32
  5. Step 5: Solve for x
    x = 13,879,395,816.32/115,724.45
  6. Step 6: Final answer
    x = 119,934.86

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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.