Home / 107,942.20-161,913.30-99,647.80

Finding the Fourth Proportional to 107,942.20, 161,913.30 and 99,647.80

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Solution

The fourth proportional to 107,942.20, 161,913.30 and 99,647.80 is: 149,471.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,942.20 : 161,913.30 = 99,647.80 : x
  2. Step 2: Convert to fraction form
    107,942.20/161,913.30 = 99,647.80/x
  3. Step 3: Cross multiply
    107,942.20x = 161,913.30 × 99,647.80
  4. Step 4: Simplify right side
    107,942.20x = 16,134,304,135.74
  5. Step 5: Solve for x
    x = 16,134,304,135.74/107,942.20
  6. Step 6: Final answer
    x = 149,471.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.