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Finding the Third Proportional to 77,149.69 and 120,235.50

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Solution

The third proportional to 77,149.69 and 120,235.50 is: 187,383.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,149.69 : 120,235.50 = 120,235.50 : x
  2. Step 2: Convert to fraction form
    77,149.69/120,235.50 = 120,235.50/x
  3. Step 3: Cross multiply
    77,149.69x = 120,235.50 × 120,235.50
  4. Step 4: Simplify right side
    77,149.69x = 14,456,575,460.25
  5. Step 5: Solve for x
    x = 14,456,575,460.25/77,149.69
  6. Step 6: Final answer
    x = 187,383.46

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.