Home / 189,705.33-261,791.50-104,820.57

Finding the Fourth Proportional to 189,705.33, 261,791.50 and 104,820.57

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Solution

The fourth proportional to 189,705.33, 261,791.50 and 104,820.57 is: 144,651.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,705.33 : 261,791.50 = 104,820.57 : x
  2. Step 2: Convert to fraction form
    189,705.33/261,791.50 = 104,820.57/x
  3. Step 3: Cross multiply
    189,705.33x = 261,791.50 × 104,820.57
  4. Step 4: Simplify right side
    189,705.33x = 27,441,134,251.16
  5. Step 5: Solve for x
    x = 27,441,134,251.16/189,705.33
  6. Step 6: Final answer
    x = 144,651.36

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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.