Home / 80,365.12-120,535.83-21,204.95

Finding the Fourth Proportional to 80,365.12, 120,535.83 and 21,204.95

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Solution

The fourth proportional to 80,365.12, 120,535.83 and 21,204.95 is: 31,804.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,365.12 : 120,535.83 = 21,204.95 : x
  2. Step 2: Convert to fraction form
    80,365.12/120,535.83 = 21,204.95/x
  3. Step 3: Cross multiply
    80,365.12x = 120,535.83 × 21,204.95
  4. Step 4: Simplify right side
    80,365.12x = 2,555,955,645.68
  5. Step 5: Solve for x
    x = 2,555,955,645.68/80,365.12
  6. Step 6: Final answer
    x = 31,804.29

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1.5x scale

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.