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Finding the Fourth Proportional to 111,251.40, 166,877.10 and 102,611.40

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Solution

The fourth proportional to 111,251.40, 166,877.10 and 102,611.40 is: 153,917.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,251.40 : 166,877.10 = 102,611.40 : x
  2. Step 2: Convert to fraction form
    111,251.40/166,877.10 = 102,611.40/x
  3. Step 3: Cross multiply
    111,251.40x = 166,877.10 × 102,611.40
  4. Step 4: Simplify right side
    111,251.40x = 17,123,492,858.94
  5. Step 5: Solve for x
    x = 17,123,492,858.94/111,251.40
  6. Step 6: Final answer
    x = 153,917.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.