Home / 126,619.66-174,769.68-78,844.78

Finding the Fourth Proportional to 126,619.66, 174,769.68 and 78,844.78

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Solution

The fourth proportional to 126,619.66, 174,769.68 and 78,844.78 is: 108,827.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,619.66 : 174,769.68 = 78,844.78 : x
  2. Step 2: Convert to fraction form
    126,619.66/174,769.68 = 78,844.78/x
  3. Step 3: Cross multiply
    126,619.66x = 174,769.68 × 78,844.78
  4. Step 4: Simplify right side
    126,619.66x = 13,779,676,970.27
  5. Step 5: Solve for x
    x = 13,779,676,970.27/126,619.66
  6. Step 6: Final answer
    x = 108,827.31

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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.