Home / 131,458.06-181,401.87-80,449.66

Finding the Fourth Proportional to 131,458.06, 181,401.87 and 80,449.66

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Solution

The fourth proportional to 131,458.06, 181,401.87 and 80,449.66 is: 111,014.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,458.06 : 181,401.87 = 80,449.66 : x
  2. Step 2: Convert to fraction form
    131,458.06/181,401.87 = 80,449.66/x
  3. Step 3: Cross multiply
    131,458.06x = 181,401.87 × 80,449.66
  4. Step 4: Simplify right side
    131,458.06x = 14,593,718,764.86
  5. Step 5: Solve for x
    x = 14,593,718,764.86/131,458.06
  6. Step 6: Final answer
    x = 111,014.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.