Home / 140,680.89-194,138.42-76,149.81

Finding the Fourth Proportional to 140,680.89, 194,138.42 and 76,149.81

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Solution

The fourth proportional to 140,680.89, 194,138.42 and 76,149.81 is: 105,086.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,680.89 : 194,138.42 = 76,149.81 : x
  2. Step 2: Convert to fraction form
    140,680.89/194,138.42 = 76,149.81/x
  3. Step 3: Cross multiply
    140,680.89x = 194,138.42 × 76,149.81
  4. Step 4: Simplify right side
    140,680.89x = 14,783,603,415.95
  5. Step 5: Solve for x
    x = 14,783,603,415.95/140,680.89
  6. Step 6: Final answer
    x = 105,086.08

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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.