Home / 135,745.96-187,365.06-76,149.16

Finding the Fourth Proportional to 135,745.96, 187,365.06 and 76,149.16

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Solution

The fourth proportional to 135,745.96, 187,365.06 and 76,149.16 is: 105,105.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,745.96 : 187,365.06 = 76,149.16 : x
  2. Step 2: Convert to fraction form
    135,745.96/187,365.06 = 76,149.16/x
  3. Step 3: Cross multiply
    135,745.96x = 187,365.06 × 76,149.16
  4. Step 4: Simplify right side
    135,745.96x = 14,267,691,932.35
  5. Step 5: Solve for x
    x = 14,267,691,932.35/135,745.96
  6. Step 6: Final answer
    x = 105,105.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.