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Finding the Fourth Proportional to 111,200.10, 166,800.15 and 75,770.70

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Solution

The fourth proportional to 111,200.10, 166,800.15 and 75,770.70 is: 113,656.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,200.10 : 166,800.15 = 75,770.70 : x
  2. Step 2: Convert to fraction form
    111,200.10/166,800.15 = 75,770.70/x
  3. Step 3: Cross multiply
    111,200.10x = 166,800.15 × 75,770.70
  4. Step 4: Simplify right side
    111,200.10x = 12,638,564,125.61
  5. Step 5: Solve for x
    x = 12,638,564,125.61/111,200.10
  6. Step 6: Final answer
    x = 113,656.05

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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.