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Finding the Fourth Proportional to 111,119.40, 166,679.10 and 28,013.40

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Solution

The fourth proportional to 111,119.40, 166,679.10 and 28,013.40 is: 42,020.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,119.40 : 166,679.10 = 28,013.40 : x
  2. Step 2: Convert to fraction form
    111,119.40/166,679.10 = 28,013.40/x
  3. Step 3: Cross multiply
    111,119.40x = 166,679.10 × 28,013.40
  4. Step 4: Simplify right side
    111,119.40x = 4,669,248,299.94
  5. Step 5: Solve for x
    x = 4,669,248,299.94/111,119.40
  6. Step 6: Final answer
    x = 42,020.10

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1.5x scale

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.