Home / 132,907.32-199,135.31-80,206.07

Finding the Fourth Proportional to 132,907.32, 199,135.31 and 80,206.07

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Solution

The fourth proportional to 132,907.32, 199,135.31 and 80,206.07 is: 120,172.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,907.32 : 199,135.31 = 80,206.07 : x
  2. Step 2: Convert to fraction form
    132,907.32/199,135.31 = 80,206.07/x
  3. Step 3: Cross multiply
    132,907.32x = 199,135.31 × 80,206.07
  4. Step 4: Simplify right side
    132,907.32x = 15,971,859,216.62
  5. Step 5: Solve for x
    x = 15,971,859,216.62/132,907.32
  6. Step 6: Final answer
    x = 120,172.91

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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.