Home / 131,254.12-181,067.65-85,912.12

Finding the Fourth Proportional to 131,254.12, 181,067.65 and 85,912.12

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Solution

The fourth proportional to 131,254.12, 181,067.65 and 85,912.12 is: 118,517.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,254.12 : 181,067.65 = 85,912.12 : x
  2. Step 2: Convert to fraction form
    131,254.12/181,067.65 = 85,912.12/x
  3. Step 3: Cross multiply
    131,254.12x = 181,067.65 × 85,912.12
  4. Step 4: Simplify right side
    131,254.12x = 15,555,905,674.92
  5. Step 5: Solve for x
    x = 15,555,905,674.92/131,254.12
  6. Step 6: Final answer
    x = 118,517.47

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1.5x scale

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.