Home / 129,310,276.95-193,965,415.43-115,280,234.55

Finding the Fourth Proportional to 129,310,276.95, 193,965,415.43 and 115,280,234.55

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Solution

The fourth proportional to 129,310,276.95, 193,965,415.43 and 115,280,234.55 is: 172,920,351.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,310,276.95 : 193,965,415.43 = 115,280,234.55 : x
  2. Step 2: Convert to fraction form
    129,310,276.95/193,965,415.43 = 115,280,234.55/x
  3. Step 3: Cross multiply
    129,310,276.95x = 193,965,415.43 × 115,280,234.55
  4. Step 4: Simplify right side
    129,310,276.95x = 22,360,378,584,782,188
  5. Step 5: Solve for x
    x = 22,360,378,584,782,188/129,310,276.95
  6. Step 6: Final answer
    x = 172,920,351.83

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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.