Home / 107,423.40-161,138.28-51,269.42

Finding the Fourth Proportional to 107,423.40, 161,138.28 and 51,269.42

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Solution

The fourth proportional to 107,423.40, 161,138.28 and 51,269.42 is: 76,905.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,423.40 : 161,138.28 = 51,269.42 : x
  2. Step 2: Convert to fraction form
    107,423.40/161,138.28 = 51,269.42/x
  3. Step 3: Cross multiply
    107,423.40x = 161,138.28 × 51,269.42
  4. Step 4: Simplify right side
    107,423.40x = 8,261,466,155.40
  5. Step 5: Solve for x
    x = 8,261,466,155.40/107,423.40
  6. Step 6: Final answer
    x = 76,905.65

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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.