Home / 129,761.64-179,071.08-73,173.03

Finding the Fourth Proportional to 129,761.64, 179,071.08 and 73,173.03

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Solution

The fourth proportional to 129,761.64, 179,071.08 and 73,173.03 is: 100,978.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,761.64 : 179,071.08 = 73,173.03 : x
  2. Step 2: Convert to fraction form
    129,761.64/179,071.08 = 73,173.03/x
  3. Step 3: Cross multiply
    129,761.64x = 179,071.08 × 73,173.03
  4. Step 4: Simplify right side
    129,761.64x = 13,103,173,508.97
  5. Step 5: Solve for x
    x = 13,103,173,508.97/129,761.64
  6. Step 6: Final answer
    x = 100,978.79

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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.