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Finding the Fourth Proportional to 203,990.72, 281,502.08 and 113,346.92

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Solution

The fourth proportional to 203,990.72, 281,502.08 and 113,346.92 is: 156,415.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,990.72 : 281,502.08 = 113,346.92 : x
  2. Step 2: Convert to fraction form
    203,990.72/281,502.08 = 113,346.92/x
  3. Step 3: Cross multiply
    203,990.72x = 281,502.08 × 113,346.92
  4. Step 4: Simplify right side
    203,990.72x = 31,907,391,767.35
  5. Step 5: Solve for x
    x = 31,907,391,767.35/203,990.72
  6. Step 6: Final answer
    x = 156,415.90

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1.5x scale

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.