Home / 129,643,715.60-194,204,299.80-80,972,176.40

Finding the Fourth Proportional to 129,643,715.60, 194,204,299.80 and 80,972,176.40

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Solution

The fourth proportional to 129,643,715.60, 194,204,299.80 and 80,972,176.40 is: 121,295,079.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,643,715.60 : 194,204,299.80 = 80,972,176.40 : x
  2. Step 2: Convert to fraction form
    129,643,715.60/194,204,299.80 = 80,972,176.40/x
  3. Step 3: Cross multiply
    129,643,715.60x = 194,204,299.80 × 80,972,176.40
  4. Step 4: Simplify right side
    129,643,715.60x = 15,725,144,821,044,086
  5. Step 5: Solve for x
    x = 15,725,144,821,044,086/129,643,715.60
  6. Step 6: Final answer
    x = 121,295,079.74

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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.