Home / 140,791.13-194,296.62-77,128.91

Finding the Fourth Proportional to 140,791.13, 194,296.62 and 77,128.91

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Solution

The fourth proportional to 140,791.13, 194,296.62 and 77,128.91 is: 106,440.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,791.13 : 194,296.62 = 77,128.91 : x
  2. Step 2: Convert to fraction form
    140,791.13/194,296.62 = 77,128.91/x
  3. Step 3: Cross multiply
    140,791.13x = 194,296.62 × 77,128.91
  4. Step 4: Simplify right side
    140,791.13x = 14,985,886,517.28
  5. Step 5: Solve for x
    x = 14,985,886,517.28/140,791.13
  6. Step 6: Final answer
    x = 106,440.56

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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.