Home / 126,781.81-174,958.31-68,638.59

Finding the Fourth Proportional to 126,781.81, 174,958.31 and 68,638.59

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Solution

The fourth proportional to 126,781.81, 174,958.31 and 68,638.59 is: 94,720.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,781.81 : 174,958.31 = 68,638.59 : x
  2. Step 2: Convert to fraction form
    126,781.81/174,958.31 = 68,638.59/x
  3. Step 3: Cross multiply
    126,781.81x = 174,958.31 × 68,638.59
  4. Step 4: Simplify right side
    126,781.81x = 12,008,891,878.78
  5. Step 5: Solve for x
    x = 12,008,891,878.78/126,781.81
  6. Step 6: Final answer
    x = 94,720.94

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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.