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Finding the Fourth Proportional to 129,120,186.80, 193,680,280.20 and 129,120,186.80

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Solution

The fourth proportional to 129,120,186.80, 193,680,280.20 and 129,120,186.80 is: 193,680,280.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,120,186.80 : 193,680,280.20 = 129,120,186.80 : x
  2. Step 2: Convert to fraction form
    129,120,186.80/193,680,280.20 = 129,120,186.80/x
  3. Step 3: Cross multiply
    129,120,186.80x = 193,680,280.20 × 129,120,186.80
  4. Step 4: Simplify right side
    129,120,186.80x = 25,008,033,958,900,340
  5. Step 5: Solve for x
    x = 25,008,033,958,900,340/129,120,186.80
  6. Step 6: Final answer
    x = 193,680,280.20

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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.