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Finding the Fourth Proportional to 123,317.28, 185,063.04 and 111,420

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Solution

The fourth proportional to 123,317.28, 185,063.04 and 111,420 is: 167,208.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,317.28 : 185,063.04 = 111,420 : x
  2. Step 2: Convert to fraction form
    123,317.28/185,063.04 = 111,420/x
  3. Step 3: Cross multiply
    123,317.28x = 185,063.04 × 111,420
  4. Step 4: Simplify right side
    123,317.28x = 20,619,723,916.80
  5. Step 5: Solve for x
    x = 20,619,723,916.80/123,317.28
  6. Step 6: Final answer
    x = 167,208.71

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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.