Home / 140,679.03-194,137.11-77,020.86

Finding the Fourth Proportional to 140,679.03, 194,137.11 and 77,020.86

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Solution

The fourth proportional to 140,679.03, 194,137.11 and 77,020.86 is: 106,288.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,679.03 : 194,137.11 = 77,020.86 : x
  2. Step 2: Convert to fraction form
    140,679.03/194,137.11 = 77,020.86/x
  3. Step 3: Cross multiply
    140,679.03x = 194,137.11 × 77,020.86
  4. Step 4: Simplify right side
    140,679.03x = 14,952,607,170.11
  5. Step 5: Solve for x
    x = 14,952,607,170.11/140,679.03
  6. Step 6: Final answer
    x = 106,288.81

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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.