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Finding the Third Proportional to 64,681 and 141,385

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Solution

The third proportional to 64,681 and 141,385 is: 309,050.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,681 : 141,385 = 141,385 : x
  2. Step 2: Convert to fraction form
    64,681/141,385 = 141,385/x
  3. Step 3: Cross multiply
    64,681x = 141,385 × 141,385
  4. Step 4: Simplify right side
    64,681x = 19,989,718,225
  5. Step 5: Solve for x
    x = 19,989,718,225/64,681
  6. Step 6: Final answer
    x = 309,050.85

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.