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Finding the Fourth Proportional to 203,177.76, 303,531.06 and 131,516.64

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Solution

The fourth proportional to 203,177.76, 303,531.06 and 131,516.64 is: 196,475.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,177.76 : 303,531.06 = 131,516.64 : x
  2. Step 2: Convert to fraction form
    203,177.76/303,531.06 = 131,516.64/x
  3. Step 3: Cross multiply
    203,177.76x = 303,531.06 × 131,516.64
  4. Step 4: Simplify right side
    203,177.76x = 39,919,385,146.84
  5. Step 5: Solve for x
    x = 39,919,385,146.84/203,177.76
  6. Step 6: Final answer
    x = 196,475.17

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.