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Finding the Third Proportional to 107,720 and 235,960

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Solution

The third proportional to 107,720 and 235,960 is: 516,868.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,720 : 235,960 = 235,960 : x
  2. Step 2: Convert to fraction form
    107,720/235,960 = 235,960/x
  3. Step 3: Cross multiply
    107,720x = 235,960 × 235,960
  4. Step 4: Simplify right side
    107,720x = 55,677,121,600
  5. Step 5: Solve for x
    x = 55,677,121,600/107,720
  6. Step 6: Final answer
    x = 516,868.93

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.