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Finding the Fourth Proportional to 111,310.10, 166,855.80 and 99,500.30

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Solution

The fourth proportional to 111,310.10, 166,855.80 and 99,500.30 is: 149,152.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,310.10 : 166,855.80 = 99,500.30 : x
  2. Step 2: Convert to fraction form
    111,310.10/166,855.80 = 99,500.30/x
  3. Step 3: Cross multiply
    111,310.10x = 166,855.80 × 99,500.30
  4. Step 4: Simplify right side
    111,310.10x = 16,602,202,156.74
  5. Step 5: Solve for x
    x = 16,602,202,156.74/111,310.10
  6. Step 6: Final answer
    x = 149,152.70

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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.