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Finding the Third Proportional to 72,679.78 and 154,153.13

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Solution

The third proportional to 72,679.78 and 154,153.13 is: 326,957.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,679.78 : 154,153.13 = 154,153.13 : x
  2. Step 2: Convert to fraction form
    72,679.78/154,153.13 = 154,153.13/x
  3. Step 3: Cross multiply
    72,679.78x = 154,153.13 × 154,153.13
  4. Step 4: Simplify right side
    72,679.78x = 23,763,185,947.27
  5. Step 5: Solve for x
    x = 23,763,185,947.27/72,679.78
  6. Step 6: Final answer
    x = 326,957.31

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.