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Finding the Third Proportional to 75,507 and 105,620

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Solution

The third proportional to 75,507 and 105,620 is: 147,742.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,507 : 105,620 = 105,620 : x
  2. Step 2: Convert to fraction form
    75,507/105,620 = 105,620/x
  3. Step 3: Cross multiply
    75,507x = 105,620 × 105,620
  4. Step 4: Simplify right side
    75,507x = 11,155,584,400
  5. Step 5: Solve for x
    x = 11,155,584,400/75,507
  6. Step 6: Final answer
    x = 147,742.39

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.