Home / 131,418.69-181,347.55-80,410.25

Finding the Fourth Proportional to 131,418.69, 181,347.55 and 80,410.25

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Solution

The fourth proportional to 131,418.69, 181,347.55 and 80,410.25 is: 110,959.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,418.69 : 181,347.55 = 80,410.25 : x
  2. Step 2: Convert to fraction form
    131,418.69/181,347.55 = 80,410.25/x
  3. Step 3: Cross multiply
    131,418.69x = 181,347.55 × 80,410.25
  4. Step 4: Simplify right side
    131,418.69x = 14,582,201,832.39
  5. Step 5: Solve for x
    x = 14,582,201,832.39/131,418.69
  6. Step 6: Final answer
    x = 110,959.88

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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.