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Finding the Third Proportional to 87,900,390 and 129,310,263

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Solution

The third proportional to 87,900,390 and 129,310,263 is: 190,228,326.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,900,390 : 129,310,263 = 129,310,263 : x
  2. Step 2: Convert to fraction form
    87,900,390/129,310,263 = 129,310,263/x
  3. Step 3: Cross multiply
    87,900,390x = 129,310,263 × 129,310,263
  4. Step 4: Simplify right side
    87,900,390x = 16,721,144,117,129,168
  5. Step 5: Solve for x
    x = 16,721,144,117,129,168/87,900,390
  6. Step 6: Final answer
    x = 190,228,326.83

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.