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Finding the Fourth Proportional to 136,365.42, 204,479.69 and 79,457.73

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Solution

The fourth proportional to 136,365.42, 204,479.69 and 79,457.73 is: 119,146.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,365.42 : 204,479.69 = 79,457.73 : x
  2. Step 2: Convert to fraction form
    136,365.42/204,479.69 = 79,457.73/x
  3. Step 3: Cross multiply
    136,365.42x = 204,479.69 × 79,457.73
  4. Step 4: Simplify right side
    136,365.42x = 16,247,491,601.22
  5. Step 5: Solve for x
    x = 16,247,491,601.22/136,365.42
  6. Step 6: Final answer
    x = 119,146.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.