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Finding the Fourth Proportional to 203,395.54, 280,656.27 and 112,751.42

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Solution

The fourth proportional to 203,395.54, 280,656.27 and 112,751.42 is: 155,580.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,395.54 : 280,656.27 = 112,751.42 : x
  2. Step 2: Convert to fraction form
    203,395.54/280,656.27 = 112,751.42/x
  3. Step 3: Cross multiply
    203,395.54x = 280,656.27 × 112,751.42
  4. Step 4: Simplify right side
    203,395.54x = 31,644,392,974.40
  5. Step 5: Solve for x
    x = 31,644,392,974.40/203,395.54
  6. Step 6: Final answer
    x = 155,580.56

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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.