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Finding the Third Proportional to 72,432 and 115,254

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Solution

The third proportional to 72,432 and 115,254 is: 183,392.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,432 : 115,254 = 115,254 : x
  2. Step 2: Convert to fraction form
    72,432/115,254 = 115,254/x
  3. Step 3: Cross multiply
    72,432x = 115,254 × 115,254
  4. Step 4: Simplify right side
    72,432x = 13,283,484,516
  5. Step 5: Solve for x
    x = 13,283,484,516/72,432
  6. Step 6: Final answer
    x = 183,392.49

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.