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Finding the Fourth Proportional to 127,157.96, 175,469.82 and 79,408.46

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Solution

The fourth proportional to 127,157.96, 175,469.82 and 79,408.46 is: 109,578.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,157.96 : 175,469.82 = 79,408.46 : x
  2. Step 2: Convert to fraction form
    127,157.96/175,469.82 = 79,408.46/x
  3. Step 3: Cross multiply
    127,157.96x = 175,469.82 × 79,408.46
  4. Step 4: Simplify right side
    127,157.96x = 13,933,788,182.68
  5. Step 5: Solve for x
    x = 13,933,788,182.68/127,157.96
  6. Step 6: Final answer
    x = 109,578.58

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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.