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Finding the Fourth Proportional to 125,975.82, 189,033.20 and 69,808.49

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Solution

The fourth proportional to 125,975.82, 189,033.20 and 69,808.49 is: 104,751.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,975.82 : 189,033.20 = 69,808.49 : x
  2. Step 2: Convert to fraction form
    125,975.82/189,033.20 = 69,808.49/x
  3. Step 3: Cross multiply
    125,975.82x = 189,033.20 × 69,808.49
  4. Step 4: Simplify right side
    125,975.82x = 13,196,122,251.87
  5. Step 5: Solve for x
    x = 13,196,122,251.87/125,975.82
  6. Step 6: Final answer
    x = 104,751.23

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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.