Home / 129,739.48-179,045.52-73,149.64

Finding the Fourth Proportional to 129,739.48, 179,045.52 and 73,149.64

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Solution

The fourth proportional to 129,739.48, 179,045.52 and 73,149.64 is: 100,949.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,739.48 : 179,045.52 = 73,149.64 : x
  2. Step 2: Convert to fraction form
    129,739.48/179,045.52 = 73,149.64/x
  3. Step 3: Cross multiply
    129,739.48x = 179,045.52 × 73,149.64
  4. Step 4: Simplify right side
    129,739.48x = 13,097,115,331.61
  5. Step 5: Solve for x
    x = 13,097,115,331.61/129,739.48
  6. Step 6: Final answer
    x = 100,949.34

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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.