Home / 136,933.72-188,936.15-79,538.94

Finding the Fourth Proportional to 136,933.72, 188,936.15 and 79,538.94

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Solution

The fourth proportional to 136,933.72, 188,936.15 and 79,538.94 is: 109,744.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,933.72 : 188,936.15 = 79,538.94 : x
  2. Step 2: Convert to fraction form
    136,933.72/188,936.15 = 79,538.94/x
  3. Step 3: Cross multiply
    136,933.72x = 188,936.15 × 79,538.94
  4. Step 4: Simplify right side
    136,933.72x = 15,027,781,769.87
  5. Step 5: Solve for x
    x = 15,027,781,769.87/136,933.72
  6. Step 6: Final answer
    x = 109,744.93

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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.