Home / 189,588.72-261,633.98-104,707.20

Finding the Fourth Proportional to 189,588.72, 261,633.98 and 104,707.20

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Solution

The fourth proportional to 189,588.72, 261,633.98 and 104,707.20 is: 144,496.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,588.72 : 261,633.98 = 104,707.20 : x
  2. Step 2: Convert to fraction form
    189,588.72/261,633.98 = 104,707.20/x
  3. Step 3: Cross multiply
    189,588.72x = 261,633.98 × 104,707.20
  4. Step 4: Simplify right side
    189,588.72x = 27,394,961,470.66
  5. Step 5: Solve for x
    x = 27,394,961,470.66/189,588.72
  6. Step 6: Final answer
    x = 144,496.79

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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.