Home / 136,785.92-188,754.50-79,426.37

Finding the Fourth Proportional to 136,785.92, 188,754.50 and 79,426.37

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Solution

The fourth proportional to 136,785.92, 188,754.50 and 79,426.37 is: 109,602.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,785.92 : 188,754.50 = 79,426.37 : x
  2. Step 2: Convert to fraction form
    136,785.92/188,754.50 = 79,426.37/x
  3. Step 3: Cross multiply
    136,785.92x = 188,754.50 × 79,426.37
  4. Step 4: Simplify right side
    136,785.92x = 14,992,085,426.62
  5. Step 5: Solve for x
    x = 14,992,085,426.62/136,785.92
  6. Step 6: Final answer
    x = 109,602.55

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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.