Home / 129,697.20-194,513.40-49,717.80

Finding the Fourth Proportional to 129,697.20, 194,513.40 and 49,717.80

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Solution

The fourth proportional to 129,697.20, 194,513.40 and 49,717.80 is: 74,564.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,697.20 : 194,513.40 = 49,717.80 : x
  2. Step 2: Convert to fraction form
    129,697.20/194,513.40 = 49,717.80/x
  3. Step 3: Cross multiply
    129,697.20x = 194,513.40 × 49,717.80
  4. Step 4: Simplify right side
    129,697.20x = 9,670,778,318.52
  5. Step 5: Solve for x
    x = 9,670,778,318.52/129,697.20
  6. Step 6: Final answer
    x = 74,564.28

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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.