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Finding the Fourth Proportional to 203,990.60, 281,461.02 and 123,416.12

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Solution

The fourth proportional to 203,990.60, 281,461.02 and 123,416.12 is: 170,286.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,990.60 : 281,461.02 = 123,416.12 : x
  2. Step 2: Convert to fraction form
    203,990.60/281,461.02 = 123,416.12/x
  3. Step 3: Cross multiply
    203,990.60x = 281,461.02 × 123,416.12
  4. Step 4: Simplify right side
    203,990.60x = 34,736,827,019.64
  5. Step 5: Solve for x
    x = 34,736,827,019.64/203,990.60
  6. Step 6: Final answer
    x = 170,286.41

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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.