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Finding the Third Proportional to 91,920 and 134,960

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Solution

The third proportional to 91,920 and 134,960 is: 198,152.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,920 : 134,960 = 134,960 : x
  2. Step 2: Convert to fraction form
    91,920/134,960 = 134,960/x
  3. Step 3: Cross multiply
    91,920x = 134,960 × 134,960
  4. Step 4: Simplify right side
    91,920x = 18,214,201,600
  5. Step 5: Solve for x
    x = 18,214,201,600/91,920
  6. Step 6: Final answer
    x = 198,152.76

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.