Home / 140,820-194,331.60-77,160.21

Finding the Fourth Proportional to 140,820, 194,331.60 and 77,160.21

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Solution

The fourth proportional to 140,820, 194,331.60 and 77,160.21 is: 106,481.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,820 : 194,331.60 = 77,160.21 : x
  2. Step 2: Convert to fraction form
    140,820/194,331.60 = 77,160.21/x
  3. Step 3: Cross multiply
    140,820x = 194,331.60 × 77,160.21
  4. Step 4: Simplify right side
    140,820x = 14,994,667,065.64
  5. Step 5: Solve for x
    x = 14,994,667,065.64/140,820
  6. Step 6: Final answer
    x = 106,481.09

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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.