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Finding the Fourth Proportional to 203,003.62, 280,120.40 and 116,990.81

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Solution

The fourth proportional to 203,003.62, 280,120.40 and 116,990.81 is: 161,433.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,003.62 : 280,120.40 = 116,990.81 : x
  2. Step 2: Convert to fraction form
    203,003.62/280,120.40 = 116,990.81/x
  3. Step 3: Cross multiply
    203,003.62x = 280,120.40 × 116,990.81
  4. Step 4: Simplify right side
    203,003.62x = 32,771,510,654.21
  5. Step 5: Solve for x
    x = 32,771,510,654.21/203,003.62
  6. Step 6: Final answer
    x = 161,433.14

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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.