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Finding the Third Proportional to 72,189 and 157,482

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Solution

The third proportional to 72,189 and 157,482 is: 343,550.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,189 : 157,482 = 157,482 : x
  2. Step 2: Convert to fraction form
    72,189/157,482 = 157,482/x
  3. Step 3: Cross multiply
    72,189x = 157,482 × 157,482
  4. Step 4: Simplify right side
    72,189x = 24,800,580,324
  5. Step 5: Solve for x
    x = 24,800,580,324/72,189
  6. Step 6: Final answer
    x = 343,550.68

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.