Home / 129,711.73-194,649.60-76,403.60

Finding the Fourth Proportional to 129,711.73, 194,649.60 and 76,403.60

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Solution

The fourth proportional to 129,711.73, 194,649.60 and 76,403.60 is: 114,653.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,711.73 : 194,649.60 = 76,403.60 : x
  2. Step 2: Convert to fraction form
    129,711.73/194,649.60 = 76,403.60/x
  3. Step 3: Cross multiply
    129,711.73x = 194,649.60 × 76,403.60
  4. Step 4: Simplify right side
    129,711.73x = 14,871,930,178.56
  5. Step 5: Solve for x
    x = 14,871,930,178.56/129,711.73
  6. Step 6: Final answer
    x = 114,653.70

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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.