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Finding the Third Proportional to 78,166,386 and 104,209,992

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Solution

The third proportional to 78,166,386 and 104,209,992 is: 138,930,849.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,166,386 : 104,209,992 = 104,209,992 : x
  2. Step 2: Convert to fraction form
    78,166,386/104,209,992 = 104,209,992/x
  3. Step 3: Cross multiply
    78,166,386x = 104,209,992 × 104,209,992
  4. Step 4: Simplify right side
    78,166,386x = 10,859,722,432,640,064
  5. Step 5: Solve for x
    x = 10,859,722,432,640,064/78,166,386
  6. Step 6: Final answer
    x = 138,930,849.80

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.