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Finding the Third Proportional to 79,530.75 and 122,986.50

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Solution

The third proportional to 79,530.75 and 122,986.50 is: 190,186.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,530.75 : 122,986.50 = 122,986.50 : x
  2. Step 2: Convert to fraction form
    79,530.75/122,986.50 = 122,986.50/x
  3. Step 3: Cross multiply
    79,530.75x = 122,986.50 × 122,986.50
  4. Step 4: Simplify right side
    79,530.75x = 15,125,679,182.25
  5. Step 5: Solve for x
    x = 15,125,679,182.25/79,530.75
  6. Step 6: Final answer
    x = 190,186.55

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.