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Finding the Fourth Proportional to 136,331.60, 188,133 and 76,704.08

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Solution

The fourth proportional to 136,331.60, 188,133 and 76,704.08 is: 105,849.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,331.60 : 188,133 = 76,704.08 : x
  2. Step 2: Convert to fraction form
    136,331.60/188,133 = 76,704.08/x
  3. Step 3: Cross multiply
    136,331.60x = 188,133 × 76,704.08
  4. Step 4: Simplify right side
    136,331.60x = 14,430,568,682.64
  5. Step 5: Solve for x
    x = 14,430,568,682.64/136,331.60
  6. Step 6: Final answer
    x = 105,849.04

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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.