Home / 129,796.34-179,131.48-78,797.24

Finding the Fourth Proportional to 129,796.34, 179,131.48 and 78,797.24

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Solution

The fourth proportional to 129,796.34, 179,131.48 and 78,797.24 is: 108,747.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,796.34 : 179,131.48 = 78,797.24 : x
  2. Step 2: Convert to fraction form
    129,796.34/179,131.48 = 78,797.24/x
  3. Step 3: Cross multiply
    129,796.34x = 179,131.48 × 78,797.24
  4. Step 4: Simplify right side
    129,796.34x = 14,115,066,221.12
  5. Step 5: Solve for x
    x = 14,115,066,221.12/129,796.34
  6. Step 6: Final answer
    x = 108,747.80

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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.