Home / 127,408.05-175,832.96-76,422.78

Finding the Fourth Proportional to 127,408.05, 175,832.96 and 76,422.78

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Solution

The fourth proportional to 127,408.05, 175,832.96 and 76,422.78 is: 105,469.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,408.05 : 175,832.96 = 76,422.78 : x
  2. Step 2: Convert to fraction form
    127,408.05/175,832.96 = 76,422.78/x
  3. Step 3: Cross multiply
    127,408.05x = 175,832.96 × 76,422.78
  4. Step 4: Simplify right side
    127,408.05x = 13,437,643,236.71
  5. Step 5: Solve for x
    x = 13,437,643,236.71/127,408.05
  6. Step 6: Final answer
    x = 105,469.34

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1.5x scale

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.