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Finding the Fourth Proportional to 173,930.42, 260,945.44 and 85,209.90

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Solution

The fourth proportional to 173,930.42, 260,945.44 and 85,209.90 is: 127,839.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,930.42 : 260,945.44 = 85,209.90 : x
  2. Step 2: Convert to fraction form
    173,930.42/260,945.44 = 85,209.90/x
  3. Step 3: Cross multiply
    173,930.42x = 260,945.44 × 85,209.90
  4. Step 4: Simplify right side
    173,930.42x = 22,235,134,634.83
  5. Step 5: Solve for x
    x = 22,235,134,634.83/173,930.42
  6. Step 6: Final answer
    x = 127,839.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.