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Finding the Third Proportional to 70,690,680 and 155,553,121

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Solution

The third proportional to 70,690,680 and 155,553,121 is: 342,290,857.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,690,680 : 155,553,121 = 155,553,121 : x
  2. Step 2: Convert to fraction form
    70,690,680/155,553,121 = 155,553,121/x
  3. Step 3: Cross multiply
    70,690,680x = 155,553,121 × 155,553,121
  4. Step 4: Simplify right side
    70,690,680x = 24,196,773,452,840,640
  5. Step 5: Solve for x
    x = 24,196,773,452,840,640/70,690,680
  6. Step 6: Final answer
    x = 342,290,857.19

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.