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Finding the Third Proportional to 66,725,681 and 143,689,762

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Solution

The third proportional to 66,725,681 and 143,689,762 is: 309,427,305.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,725,681 : 143,689,762 = 143,689,762 : x
  2. Step 2: Convert to fraction form
    66,725,681/143,689,762 = 143,689,762/x
  3. Step 3: Cross multiply
    66,725,681x = 143,689,762 × 143,689,762
  4. Step 4: Simplify right side
    66,725,681x = 20,646,747,703,616,644
  5. Step 5: Solve for x
    x = 20,646,747,703,616,644/66,725,681
  6. Step 6: Final answer
    x = 309,427,305.86

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.