Home / 134,149.78-185,086.32-80,415.19

Finding the Fourth Proportional to 134,149.78, 185,086.32 and 80,415.19

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Solution

The fourth proportional to 134,149.78, 185,086.32 and 80,415.19 is: 110,948.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,149.78 : 185,086.32 = 80,415.19 : x
  2. Step 2: Convert to fraction form
    134,149.78/185,086.32 = 80,415.19/x
  3. Step 3: Cross multiply
    134,149.78x = 185,086.32 × 80,415.19
  4. Step 4: Simplify right side
    134,149.78x = 14,883,751,589.20
  5. Step 5: Solve for x
    x = 14,883,751,589.20/134,149.78
  6. Step 6: Final answer
    x = 110,948.76

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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.