Home / 113,976.36-170,999.10-80,760.78

Finding the Fourth Proportional to 113,976.36, 170,999.10 and 80,760.78

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Solution

The fourth proportional to 113,976.36, 170,999.10 and 80,760.78 is: 121,165.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,976.36 : 170,999.10 = 80,760.78 : x
  2. Step 2: Convert to fraction form
    113,976.36/170,999.10 = 80,760.78/x
  3. Step 3: Cross multiply
    113,976.36x = 170,999.10 × 80,760.78
  4. Step 4: Simplify right side
    113,976.36x = 13,810,020,695.30
  5. Step 5: Solve for x
    x = 13,810,020,695.30/113,976.36
  6. Step 6: Final answer
    x = 121,165.66

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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.