Home / 189,778.80-261,891-104,899.44

Finding the Fourth Proportional to 189,778.80, 261,891 and 104,899.44

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Solution

The fourth proportional to 189,778.80, 261,891 and 104,899.44 is: 144,759.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,778.80 : 261,891 = 104,899.44 : x
  2. Step 2: Convert to fraction form
    189,778.80/261,891 = 104,899.44/x
  3. Step 3: Cross multiply
    189,778.80x = 261,891 × 104,899.44
  4. Step 4: Simplify right side
    189,778.80x = 27,472,219,241.04
  5. Step 5: Solve for x
    x = 27,472,219,241.04/189,778.80
  6. Step 6: Final answer
    x = 144,759.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.