Home / 151,131.20-226,871.40-81,147.20

Finding the Fourth Proportional to 151,131.20, 226,871.40 and 81,147.20

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Solution

The fourth proportional to 151,131.20, 226,871.40 and 81,147.20 is: 121,814.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,131.20 : 226,871.40 = 81,147.20 : x
  2. Step 2: Convert to fraction form
    151,131.20/226,871.40 = 81,147.20/x
  3. Step 3: Cross multiply
    151,131.20x = 226,871.40 × 81,147.20
  4. Step 4: Simplify right side
    151,131.20x = 18,409,978,870.08
  5. Step 5: Solve for x
    x = 18,409,978,870.08/151,131.20
  6. Step 6: Final answer
    x = 121,814.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.