Home / 131,356.05-181,275.15-80,367.96

Finding the Fourth Proportional to 131,356.05, 181,275.15 and 80,367.96

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Solution

The fourth proportional to 131,356.05, 181,275.15 and 80,367.96 is: 110,910.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,356.05 : 181,275.15 = 80,367.96 : x
  2. Step 2: Convert to fraction form
    131,356.05/181,275.15 = 80,367.96/x
  3. Step 3: Cross multiply
    131,356.05x = 181,275.15 × 80,367.96
  4. Step 4: Simplify right side
    131,356.05x = 14,568,714,004.19
  5. Step 5: Solve for x
    x = 14,568,714,004.19/131,356.05
  6. Step 6: Final answer
    x = 110,910.11

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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.