Home / 129,979.80-179,276.09-82,187.10

Finding the Fourth Proportional to 129,979.80, 179,276.09 and 82,187.10

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Solution

The fourth proportional to 129,979.80, 179,276.09 and 82,187.10 is: 113,357.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,979.80 : 179,276.09 = 82,187.10 : x
  2. Step 2: Convert to fraction form
    129,979.80/179,276.09 = 82,187.10/x
  3. Step 3: Cross multiply
    129,979.80x = 179,276.09 × 82,187.10
  4. Step 4: Simplify right side
    129,979.80x = 14,734,181,525.50
  5. Step 5: Solve for x
    x = 14,734,181,525.50/129,979.80
  6. Step 6: Final answer
    x = 113,357.47

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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.