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Finding the Third Proportional to 61,684.88 and 128,215.13

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Solution

The third proportional to 61,684.88 and 128,215.13 is: 266,501.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,684.88 : 128,215.13 = 128,215.13 : x
  2. Step 2: Convert to fraction form
    61,684.88/128,215.13 = 128,215.13/x
  3. Step 3: Cross multiply
    61,684.88x = 128,215.13 × 128,215.13
  4. Step 4: Simplify right side
    61,684.88x = 16,439,118,278.77
  5. Step 5: Solve for x
    x = 16,439,118,278.77/61,684.88
  6. Step 6: Final answer
    x = 266,501.61

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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.