Home / 135,957.21-187,633.63-82,255.42

Finding the Fourth Proportional to 135,957.21, 187,633.63 and 82,255.42

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Solution

The fourth proportional to 135,957.21, 187,633.63 and 82,255.42 is: 113,520.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,957.21 : 187,633.63 = 82,255.42 : x
  2. Step 2: Convert to fraction form
    135,957.21/187,633.63 = 82,255.42/x
  3. Step 3: Cross multiply
    135,957.21x = 187,633.63 × 82,255.42
  4. Step 4: Simplify right side
    135,957.21x = 15,433,883,041.77
  5. Step 5: Solve for x
    x = 15,433,883,041.77/135,957.21
  6. Step 6: Final answer
    x = 113,520.15

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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.