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Finding the Fourth Proportional to 126,958.69, 175,119.67 and 81,565.08

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Solution

The fourth proportional to 126,958.69, 175,119.67 and 81,565.08 is: 112,506.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,958.69 : 175,119.67 = 81,565.08 : x
  2. Step 2: Convert to fraction form
    126,958.69/175,119.67 = 81,565.08/x
  3. Step 3: Cross multiply
    126,958.69x = 175,119.67 × 81,565.08
  4. Step 4: Simplify right side
    126,958.69x = 14,283,649,893.12
  5. Step 5: Solve for x
    x = 14,283,649,893.12/126,958.69
  6. Step 6: Final answer
    x = 112,506.28

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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.