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Finding the Third Proportional to 72,120 and 157,362

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Solution

The third proportional to 72,120 and 157,362 is: 343,355.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,120 : 157,362 = 157,362 : x
  2. Step 2: Convert to fraction form
    72,120/157,362 = 157,362/x
  3. Step 3: Cross multiply
    72,120x = 157,362 × 157,362
  4. Step 4: Simplify right side
    72,120x = 24,762,799,044
  5. Step 5: Solve for x
    x = 24,762,799,044/72,120
  6. Step 6: Final answer
    x = 343,355.51

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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.