Home / 129,979.13-179,374.46-73,390.91

Finding the Fourth Proportional to 129,979.13, 179,374.46 and 73,390.91

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Solution

The fourth proportional to 129,979.13, 179,374.46 and 73,390.91 is: 101,281.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,979.13 : 179,374.46 = 73,390.91 : x
  2. Step 2: Convert to fraction form
    129,979.13/179,374.46 = 73,390.91/x
  3. Step 3: Cross multiply
    129,979.13x = 179,374.46 × 73,390.91
  4. Step 4: Simplify right side
    129,979.13x = 13,164,453,586.33
  5. Step 5: Solve for x
    x = 13,164,453,586.33/129,979.13
  6. Step 6: Final answer
    x = 101,281.29

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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.