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Finding the Fourth Proportional to 189,707.52, 261,822.33 and 109,133.58

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Solution

The fourth proportional to 189,707.52, 261,822.33 and 109,133.58 is: 150,619.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,707.52 : 261,822.33 = 109,133.58 : x
  2. Step 2: Convert to fraction form
    189,707.52/261,822.33 = 109,133.58/x
  3. Step 3: Cross multiply
    189,707.52x = 261,822.33 × 109,133.58
  4. Step 4: Simplify right side
    189,707.52x = 28,573,608,196.84
  5. Step 5: Solve for x
    x = 28,573,608,196.84/189,707.52
  6. Step 6: Final answer
    x = 150,619.27

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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.