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Finding the Third Proportional to 72,220 and 107,726

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Solution

The third proportional to 72,220 and 107,726 is: 160,688.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,220 : 107,726 = 107,726 : x
  2. Step 2: Convert to fraction form
    72,220/107,726 = 107,726/x
  3. Step 3: Cross multiply
    72,220x = 107,726 × 107,726
  4. Step 4: Simplify right side
    72,220x = 11,604,891,076
  5. Step 5: Solve for x
    x = 11,604,891,076/72,220
  6. Step 6: Final answer
    x = 160,688.05

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.