Home / 135,438.23-203,172.91-79,278.85

Finding the Fourth Proportional to 135,438.23, 203,172.91 and 79,278.85

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Solution

The fourth proportional to 135,438.23, 203,172.91 and 79,278.85 is: 118,927.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,438.23 : 203,172.91 = 79,278.85 : x
  2. Step 2: Convert to fraction form
    135,438.23/203,172.91 = 79,278.85/x
  3. Step 3: Cross multiply
    135,438.23x = 203,172.91 × 79,278.85
  4. Step 4: Simplify right side
    135,438.23x = 16,107,314,711.72
  5. Step 5: Solve for x
    x = 16,107,314,711.72/135,438.23
  6. Step 6: Final answer
    x = 118,927.39

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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.