Home / 129,310,689.70-193,966,034.55-115,280,647.30

Finding the Fourth Proportional to 129,310,689.70, 193,966,034.55 and 115,280,647.30

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Solution

The fourth proportional to 129,310,689.70, 193,966,034.55 and 115,280,647.30 is: 172,920,970.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,310,689.70 : 193,966,034.55 = 115,280,647.30 : x
  2. Step 2: Convert to fraction form
    129,310,689.70/193,966,034.55 = 115,280,647.30/x
  3. Step 3: Cross multiply
    129,310,689.70x = 193,966,034.55 × 115,280,647.30
  4. Step 4: Simplify right side
    129,310,689.70x = 22,360,530,017,138,164
  5. Step 5: Solve for x
    x = 22,360,530,017,138,164/129,310,689.70
  6. Step 6: Final answer
    x = 172,920,970.95

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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.