Home / 512,834.88-769,163.34-138,770.40

Finding the Fourth Proportional to 512,834.88, 769,163.34 and 138,770.40

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Solution

The fourth proportional to 512,834.88, 769,163.34 and 138,770.40 is: 208,131.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,834.88 : 769,163.34 = 138,770.40 : x
  2. Step 2: Convert to fraction form
    512,834.88/769,163.34 = 138,770.40/x
  3. Step 3: Cross multiply
    512,834.88x = 769,163.34 × 138,770.40
  4. Step 4: Simplify right side
    512,834.88x = 106,737,104,357.14
  5. Step 5: Solve for x
    x = 106,737,104,357.14/512,834.88
  6. Step 6: Final answer
    x = 208,131.52

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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.