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Finding the Fourth Proportional to 135,361.01, 202,973.15 and 79,217.98

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Solution

The fourth proportional to 135,361.01, 202,973.15 and 79,217.98 is: 118,786.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,361.01 : 202,973.15 = 79,217.98 : x
  2. Step 2: Convert to fraction form
    135,361.01/202,973.15 = 79,217.98/x
  3. Step 3: Cross multiply
    135,361.01x = 202,973.15 × 79,217.98
  4. Step 4: Simplify right side
    135,361.01x = 16,079,122,627.85
  5. Step 5: Solve for x
    x = 16,079,122,627.85/135,361.01
  6. Step 6: Final answer
    x = 118,786.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.