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Finding the Third Proportional to 85,506.75 and 121,392

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Solution

The third proportional to 85,506.75 and 121,392 is: 172,337.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,506.75 : 121,392 = 121,392 : x
  2. Step 2: Convert to fraction form
    85,506.75/121,392 = 121,392/x
  3. Step 3: Cross multiply
    85,506.75x = 121,392 × 121,392
  4. Step 4: Simplify right side
    85,506.75x = 14,736,017,664
  5. Step 5: Solve for x
    x = 14,736,017,664/85,506.75
  6. Step 6: Final answer
    x = 172,337.48

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.