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Finding the Third Proportional to 73,128 and 106,920.50

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Solution

The third proportional to 73,128 and 106,920.50 is: 156,328.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,128 : 106,920.50 = 106,920.50 : x
  2. Step 2: Convert to fraction form
    73,128/106,920.50 = 106,920.50/x
  3. Step 3: Cross multiply
    73,128x = 106,920.50 × 106,920.50
  4. Step 4: Simplify right side
    73,128x = 11,431,993,320.25
  5. Step 5: Solve for x
    x = 11,431,993,320.25/73,128
  6. Step 6: Final answer
    x = 156,328.54

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.