Home / 140,476.20-193,836-79,219.68

Finding the Fourth Proportional to 140,476.20, 193,836 and 79,219.68

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Solution

The fourth proportional to 140,476.20, 193,836 and 79,219.68 is: 109,311.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,476.20 : 193,836 = 79,219.68 : x
  2. Step 2: Convert to fraction form
    140,476.20/193,836 = 79,219.68/x
  3. Step 3: Cross multiply
    140,476.20x = 193,836 × 79,219.68
  4. Step 4: Simplify right side
    140,476.20x = 15,355,625,892.48
  5. Step 5: Solve for x
    x = 15,355,625,892.48/140,476.20
  6. Step 6: Final answer
    x = 109,311.23

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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.