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Finding the Fourth Proportional to 203,167.85, 280,373.69 and 122,579.79

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Solution

The fourth proportional to 203,167.85, 280,373.69 and 122,579.79 is: 169,161.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,167.85 : 280,373.69 = 122,579.79 : x
  2. Step 2: Convert to fraction form
    203,167.85/280,373.69 = 122,579.79/x
  3. Step 3: Cross multiply
    203,167.85x = 280,373.69 × 122,579.79
  4. Step 4: Simplify right side
    203,167.85x = 34,368,147,428.83
  5. Step 5: Solve for x
    x = 34,368,147,428.83/203,167.85
  6. Step 6: Final answer
    x = 169,161.35

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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.