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Finding the Fourth Proportional to 111,230.80, 166,813.80 and 40,145.20

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Solution

The fourth proportional to 111,230.80, 166,813.80 and 40,145.20 is: 60,206.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,230.80 : 166,813.80 = 40,145.20 : x
  2. Step 2: Convert to fraction form
    111,230.80/166,813.80 = 40,145.20/x
  3. Step 3: Cross multiply
    111,230.80x = 166,813.80 × 40,145.20
  4. Step 4: Simplify right side
    111,230.80x = 6,696,773,363.76
  5. Step 5: Solve for x
    x = 6,696,773,363.76/111,230.80
  6. Step 6: Final answer
    x = 60,206.11

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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.