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Finding the Third Proportional to 72,342 and 108,440

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Solution

The third proportional to 72,342 and 108,440 is: 162,550.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,342 : 108,440 = 108,440 : x
  2. Step 2: Convert to fraction form
    72,342/108,440 = 108,440/x
  3. Step 3: Cross multiply
    72,342x = 108,440 × 108,440
  4. Step 4: Simplify right side
    72,342x = 11,759,233,600
  5. Step 5: Solve for x
    x = 11,759,233,600/72,342
  6. Step 6: Final answer
    x = 162,550.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.