Home / 107,405.18-161,135.13-75,876.86

Finding the Fourth Proportional to 107,405.18, 161,135.13 and 75,876.86

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Solution

The fourth proportional to 107,405.18, 161,135.13 and 75,876.86 is: 113,834.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,405.18 : 161,135.13 = 75,876.86 : x
  2. Step 2: Convert to fraction form
    107,405.18/161,135.13 = 75,876.86/x
  3. Step 3: Cross multiply
    107,405.18x = 161,135.13 × 75,876.86
  4. Step 4: Simplify right side
    107,405.18x = 12,226,427,700.09
  5. Step 5: Solve for x
    x = 12,226,427,700.09/107,405.18
  6. Step 6: Final answer
    x = 113,834.62

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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.