Home / 111,533.20-167,152.12-81,811.87

Finding the Fourth Proportional to 111,533.20, 167,152.12 and 81,811.87

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Solution

The fourth proportional to 111,533.20, 167,152.12 and 81,811.87 is: 122,609.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,533.20 : 167,152.12 = 81,811.87 : x
  2. Step 2: Convert to fraction form
    111,533.20/167,152.12 = 81,811.87/x
  3. Step 3: Cross multiply
    111,533.20x = 167,152.12 × 81,811.87
  4. Step 4: Simplify right side
    111,533.20x = 13,675,027,511.66
  5. Step 5: Solve for x
    x = 13,675,027,511.66/111,533.20
  6. Step 6: Final answer
    x = 122,609.48

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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.