Home / 80,182.08-120,263.87-21,022.45

Finding the Fourth Proportional to 80,182.08, 120,263.87 and 21,022.45

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Solution

The fourth proportional to 80,182.08, 120,263.87 and 21,022.45 is: 31,531.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,182.08 : 120,263.87 = 21,022.45 : x
  2. Step 2: Convert to fraction form
    80,182.08/120,263.87 = 21,022.45/x
  3. Step 3: Cross multiply
    80,182.08x = 120,263.87 × 21,022.45
  4. Step 4: Simplify right side
    80,182.08x = 2,528,240,945.78
  5. Step 5: Solve for x
    x = 2,528,240,945.78/80,182.08
  6. Step 6: Final answer
    x = 31,531.25

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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.