Home / 117,932.80-162,470.40-82,061.20

Finding the Fourth Proportional to 117,932.80, 162,470.40 and 82,061.20

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Solution

The fourth proportional to 117,932.80, 162,470.40 and 82,061.20 is: 113,051.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,932.80 : 162,470.40 = 82,061.20 : x
  2. Step 2: Convert to fraction form
    117,932.80/162,470.40 = 82,061.20/x
  3. Step 3: Cross multiply
    117,932.80x = 162,470.40 × 82,061.20
  4. Step 4: Simplify right side
    117,932.80x = 13,332,515,988.48
  5. Step 5: Solve for x
    x = 13,332,515,988.48/117,932.80
  6. Step 6: Final answer
    x = 113,051.81

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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.