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Finding the Fourth Proportional to 136,509.44, 188,405.73 and 79,182.68

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Solution

The fourth proportional to 136,509.44, 188,405.73 and 79,182.68 is: 109,285.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,509.44 : 188,405.73 = 79,182.68 : x
  2. Step 2: Convert to fraction form
    136,509.44/188,405.73 = 79,182.68/x
  3. Step 3: Cross multiply
    136,509.44x = 188,405.73 × 79,182.68
  4. Step 4: Simplify right side
    136,509.44x = 14,918,469,686.73
  5. Step 5: Solve for x
    x = 14,918,469,686.73/136,509.44
  6. Step 6: Final answer
    x = 109,285.26

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1.5x scale

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.