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Finding the Fourth Proportional to 125,920.33, 188,825.00 and 66,742.34

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Solution

The fourth proportional to 125,920.33, 188,825.00 and 66,742.34 is: 100,084.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,920.33 : 188,825.00 = 66,742.34 : x
  2. Step 2: Convert to fraction form
    125,920.33/188,825.00 = 66,742.34/x
  3. Step 3: Cross multiply
    125,920.33x = 188,825.00 × 66,742.34
  4. Step 4: Simplify right side
    125,920.33x = 12,602,621,072.66
  5. Step 5: Solve for x
    x = 12,602,621,072.66/125,920.33
  6. Step 6: Final answer
    x = 100,084.09

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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.