Home / 127,872.72-176,349.96-80,131.28

Finding the Fourth Proportional to 127,872.72, 176,349.96 and 80,131.28

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Solution

The fourth proportional to 127,872.72, 176,349.96 and 80,131.28 is: 110,509.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,872.72 : 176,349.96 = 80,131.28 : x
  2. Step 2: Convert to fraction form
    127,872.72/176,349.96 = 80,131.28/x
  3. Step 3: Cross multiply
    127,872.72x = 176,349.96 × 80,131.28
  4. Step 4: Simplify right side
    127,872.72x = 14,131,148,022.75
  5. Step 5: Solve for x
    x = 14,131,148,022.75/127,872.72
  6. Step 6: Final answer
    x = 110,509.48

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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.