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Finding the Third Proportional to 61,655,180 and 128,411,173

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Solution

The third proportional to 61,655,180 and 128,411,173 is: 267,445,968.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,655,180 : 128,411,173 = 128,411,173 : x
  2. Step 2: Convert to fraction form
    61,655,180/128,411,173 = 128,411,173/x
  3. Step 3: Cross multiply
    61,655,180x = 128,411,173 × 128,411,173
  4. Step 4: Simplify right side
    61,655,180x = 16,489,429,351,235,928
  5. Step 5: Solve for x
    x = 16,489,429,351,235,928/61,655,180
  6. Step 6: Final answer
    x = 267,445,968.87

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.