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Finding the Third Proportional to 71,971,259 and 156,721,078

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Solution

The third proportional to 71,971,259 and 156,721,078 is: 341,268,120.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,971,259 : 156,721,078 = 156,721,078 : x
  2. Step 2: Convert to fraction form
    71,971,259/156,721,078 = 156,721,078/x
  3. Step 3: Cross multiply
    71,971,259x = 156,721,078 × 156,721,078
  4. Step 4: Simplify right side
    71,971,259x = 24,561,496,289,482,084
  5. Step 5: Solve for x
    x = 24,561,496,289,482,084/71,971,259
  6. Step 6: Final answer
    x = 341,268,120.51

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.