Home / 135,913.12-187,554.92-75,487.61

Finding the Fourth Proportional to 135,913.12, 187,554.92 and 75,487.61

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Solution

The fourth proportional to 135,913.12, 187,554.92 and 75,487.61 is: 104,170.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,913.12 : 187,554.92 = 75,487.61 : x
  2. Step 2: Convert to fraction form
    135,913.12/187,554.92 = 75,487.61/x
  3. Step 3: Cross multiply
    135,913.12x = 187,554.92 × 75,487.61
  4. Step 4: Simplify right side
    135,913.12x = 14,158,072,745.99
  5. Step 5: Solve for x
    x = 14,158,072,745.99/135,913.12
  6. Step 6: Final answer
    x = 104,170.02

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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.