Home / 231,984.11-320,132.75-135,181.80

Finding the Fourth Proportional to 231,984.11, 320,132.75 and 135,181.80

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Solution

The fourth proportional to 231,984.11, 320,132.75 and 135,181.80 is: 186,547.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,984.11 : 320,132.75 = 135,181.80 : x
  2. Step 2: Convert to fraction form
    231,984.11/320,132.75 = 135,181.80/x
  3. Step 3: Cross multiply
    231,984.11x = 320,132.75 × 135,181.80
  4. Step 4: Simplify right side
    231,984.11x = 43,276,120,708.04
  5. Step 5: Solve for x
    x = 43,276,120,708.04/231,984.11
  6. Step 6: Final answer
    x = 186,547.78

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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.