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Finding the Third Proportional to 91,738 and 129,187.75

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Solution

The third proportional to 91,738 and 129,187.75 is: 181,925.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,738 : 129,187.75 = 129,187.75 : x
  2. Step 2: Convert to fraction form
    91,738/129,187.75 = 129,187.75/x
  3. Step 3: Cross multiply
    91,738x = 129,187.75 × 129,187.75
  4. Step 4: Simplify right side
    91,738x = 16,689,474,750.06
  5. Step 5: Solve for x
    x = 16,689,474,750.06/91,738
  6. Step 6: Final answer
    x = 181,925.43

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.