Home / 129,640,930.60-194,200,122.30-80,969,391.40

Finding the Fourth Proportional to 129,640,930.60, 194,200,122.30 and 80,969,391.40

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Solution

The fourth proportional to 129,640,930.60, 194,200,122.30 and 80,969,391.40 is: 121,290,904.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,640,930.60 : 194,200,122.30 = 80,969,391.40 : x
  2. Step 2: Convert to fraction form
    129,640,930.60/194,200,122.30 = 80,969,391.40/x
  3. Step 3: Cross multiply
    129,640,930.60x = 194,200,122.30 × 80,969,391.40
  4. Step 4: Simplify right side
    129,640,930.60x = 15,724,265,712,436,570
  5. Step 5: Solve for x
    x = 15,724,265,712,436,570/129,640,930.60
  6. Step 6: Final answer
    x = 121,290,904.34

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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.