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Finding the Third Proportional to 78,720,486 and 108,514,632

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Solution

The third proportional to 78,720,486 and 108,514,632 is: 149,585,272.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,720,486 : 108,514,632 = 108,514,632 : x
  2. Step 2: Convert to fraction form
    78,720,486/108,514,632 = 108,514,632/x
  3. Step 3: Cross multiply
    78,720,486x = 108,514,632 × 108,514,632
  4. Step 4: Simplify right side
    78,720,486x = 11,775,425,358,095,424
  5. Step 5: Solve for x
    x = 11,775,425,358,095,424/78,720,486
  6. Step 6: Final answer
    x = 149,585,272.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.