Home / 129,938.60-194,972.70-73,821.80

Finding the Fourth Proportional to 129,938.60, 194,972.70 and 73,821.80

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Solution

The fourth proportional to 129,938.60, 194,972.70 and 73,821.80 is: 110,769.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,938.60 : 194,972.70 = 73,821.80 : x
  2. Step 2: Convert to fraction form
    129,938.60/194,972.70 = 73,821.80/x
  3. Step 3: Cross multiply
    129,938.60x = 194,972.70 × 73,821.80
  4. Step 4: Simplify right side
    129,938.60x = 14,393,235,664.86
  5. Step 5: Solve for x
    x = 14,393,235,664.86/129,938.60
  6. Step 6: Final answer
    x = 110,769.51

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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.