Home / 142,589.88-213,818.82-80,260.36

Finding the Fourth Proportional to 142,589.88, 213,818.82 and 80,260.36

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Solution

The fourth proportional to 142,589.88, 213,818.82 and 80,260.36 is: 120,353.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,589.88 : 213,818.82 = 80,260.36 : x
  2. Step 2: Convert to fraction form
    142,589.88/213,818.82 = 80,260.36/x
  3. Step 3: Cross multiply
    142,589.88x = 213,818.82 × 80,260.36
  4. Step 4: Simplify right side
    142,589.88x = 17,161,175,467.98
  5. Step 5: Solve for x
    x = 17,161,175,467.98/142,589.88
  6. Step 6: Final answer
    x = 120,353.39

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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.