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Finding the Third Proportional to 77,976,604 and 121,229,475

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Solution

The third proportional to 77,976,604 and 121,229,475 is: 188,474,296.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,976,604 : 121,229,475 = 121,229,475 : x
  2. Step 2: Convert to fraction form
    77,976,604/121,229,475 = 121,229,475/x
  3. Step 3: Cross multiply
    77,976,604x = 121,229,475 × 121,229,475
  4. Step 4: Simplify right side
    77,976,604x = 14,696,585,608,775,624
  5. Step 5: Solve for x
    x = 14,696,585,608,775,624/77,976,604
  6. Step 6: Final answer
    x = 188,474,296.84

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.