Home / 121,286.16-182,133.72-79,238.16

Finding the Fourth Proportional to 121,286.16, 182,133.72 and 79,238.16

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Solution

The fourth proportional to 121,286.16, 182,133.72 and 79,238.16 is: 118,990.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,286.16 : 182,133.72 = 79,238.16 : x
  2. Step 2: Convert to fraction form
    121,286.16/182,133.72 = 79,238.16/x
  3. Step 3: Cross multiply
    121,286.16x = 182,133.72 × 79,238.16
  4. Step 4: Simplify right side
    121,286.16x = 14,431,940,846.76
  5. Step 5: Solve for x
    x = 14,431,940,846.76/121,286.16
  6. Step 6: Final answer
    x = 118,990.83

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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.