Home / 172,110.08-258,195.20-78,625.28

Finding the Fourth Proportional to 172,110.08, 258,195.20 and 78,625.28

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Solution

The fourth proportional to 172,110.08, 258,195.20 and 78,625.28 is: 117,951.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,110.08 : 258,195.20 = 78,625.28 : x
  2. Step 2: Convert to fraction form
    172,110.08/258,195.20 = 78,625.28/x
  3. Step 3: Cross multiply
    172,110.08x = 258,195.20 × 78,625.28
  4. Step 4: Simplify right side
    172,110.08x = 20,300,669,894.66
  5. Step 5: Solve for x
    x = 20,300,669,894.66/172,110.08
  6. Step 6: Final answer
    x = 117,951.66

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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.