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Finding the Fourth Proportional to 189,195.80, 261,196.99 and 125,620.52

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Solution

The fourth proportional to 189,195.80, 261,196.99 and 125,620.52 is: 173,427.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,195.80 : 261,196.99 = 125,620.52 : x
  2. Step 2: Convert to fraction form
    189,195.80/261,196.99 = 125,620.52/x
  3. Step 3: Cross multiply
    189,195.80x = 261,196.99 × 125,620.52
  4. Step 4: Simplify right side
    189,195.80x = 32,811,700,400.25
  5. Step 5: Solve for x
    x = 32,811,700,400.25/189,195.80
  6. Step 6: Final answer
    x = 173,427.22

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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.