Home / 212,787,540.60-319,181,310.90-76,486,702.20

Finding the Fourth Proportional to 212,787,540.60, 319,181,310.90 and 76,486,702.20

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Solution

The fourth proportional to 212,787,540.60, 319,181,310.90 and 76,486,702.20 is: 114,730,053.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,787,540.60 : 319,181,310.90 = 76,486,702.20 : x
  2. Step 2: Convert to fraction form
    212,787,540.60/319,181,310.90 = 76,486,702.20/x
  3. Step 3: Cross multiply
    212,787,540.60x = 319,181,310.90 × 76,486,702.20
  4. Step 4: Simplify right side
    212,787,540.60x = 24,413,125,874,613,912
  5. Step 5: Solve for x
    x = 24,413,125,874,613,912/212,787,540.60
  6. Step 6: Final answer
    x = 114,730,053.30

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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.