Home / 115,939.44-159,958.08-80,116.56

Finding the Fourth Proportional to 115,939.44, 159,958.08 and 80,116.56

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Solution

The fourth proportional to 115,939.44, 159,958.08 and 80,116.56 is: 110,534.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,939.44 : 159,958.08 = 80,116.56 : x
  2. Step 2: Convert to fraction form
    115,939.44/159,958.08 = 80,116.56/x
  3. Step 3: Cross multiply
    115,939.44x = 159,958.08 × 80,116.56
  4. Step 4: Simplify right side
    115,939.44x = 12,815,291,113.80
  5. Step 5: Solve for x
    x = 12,815,291,113.80/115,939.44
  6. Step 6: Final answer
    x = 110,534.35

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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.