Home / 122,928.90-169,648.20-75,167.28

Finding the Fourth Proportional to 122,928.90, 169,648.20 and 75,167.28

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Solution

The fourth proportional to 122,928.90, 169,648.20 and 75,167.28 is: 103,734.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,928.90 : 169,648.20 = 75,167.28 : x
  2. Step 2: Convert to fraction form
    122,928.90/169,648.20 = 75,167.28/x
  3. Step 3: Cross multiply
    122,928.90x = 169,648.20 × 75,167.28
  4. Step 4: Simplify right side
    122,928.90x = 12,751,993,750.90
  5. Step 5: Solve for x
    x = 12,751,993,750.90/122,928.90
  6. Step 6: Final answer
    x = 103,734.71

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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.