Home / 122,890.55-169,601.72-75,175.65

Finding the Fourth Proportional to 122,890.55, 169,601.72 and 75,175.65

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Solution

The fourth proportional to 122,890.55, 169,601.72 and 75,175.65 is: 103,750.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,890.55 : 169,601.72 = 75,175.65 : x
  2. Step 2: Convert to fraction form
    122,890.55/169,601.72 = 75,175.65/x
  3. Step 3: Cross multiply
    122,890.55x = 169,601.72 × 75,175.65
  4. Step 4: Simplify right side
    122,890.55x = 12,749,919,542.12
  5. Step 5: Solve for x
    x = 12,749,919,542.12/122,890.55
  6. Step 6: Final answer
    x = 103,750.20

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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.