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Finding the Third Proportional to 91,860.50 and 131,639

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Solution

The third proportional to 91,860.50 and 131,639 is: 188,642.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,860.50 : 131,639 = 131,639 : x
  2. Step 2: Convert to fraction form
    91,860.50/131,639 = 131,639/x
  3. Step 3: Cross multiply
    91,860.50x = 131,639 × 131,639
  4. Step 4: Simplify right side
    91,860.50x = 17,328,826,321
  5. Step 5: Solve for x
    x = 17,328,826,321/91,860.50
  6. Step 6: Final answer
    x = 188,642.85

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.