Home / 131,471.42-181,367.13-86,129.43

Finding the Fourth Proportional to 131,471.42, 181,367.13 and 86,129.43

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Solution

The fourth proportional to 131,471.42, 181,367.13 and 86,129.43 is: 118,817.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,471.42 : 181,367.13 = 86,129.43 : x
  2. Step 2: Convert to fraction form
    131,471.42/181,367.13 = 86,129.43/x
  3. Step 3: Cross multiply
    131,471.42x = 181,367.13 × 86,129.43
  4. Step 4: Simplify right side
    131,471.42x = 15,621,047,527.64
  5. Step 5: Solve for x
    x = 15,621,047,527.64/131,471.42
  6. Step 6: Final answer
    x = 118,817.06

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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.