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Finding the Fourth Proportional to 111,018.86, 166,530.35 and 36,138.71

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Solution

The fourth proportional to 111,018.86, 166,530.35 and 36,138.71 is: 54,208.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,018.86 : 166,530.35 = 36,138.71 : x
  2. Step 2: Convert to fraction form
    111,018.86/166,530.35 = 36,138.71/x
  3. Step 3: Cross multiply
    111,018.86x = 166,530.35 × 36,138.71
  4. Step 4: Simplify right side
    111,018.86x = 6,018,191,011.50
  5. Step 5: Solve for x
    x = 6,018,191,011.50/111,018.86
  6. Step 6: Final answer
    x = 54,208.73

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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.