Home / 126,318.83-189,383.40-76,388.67

Finding the Fourth Proportional to 126,318.83, 189,383.40 and 76,388.67

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Solution

The fourth proportional to 126,318.83, 189,383.40 and 76,388.67 is: 114,525.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,318.83 : 189,383.40 = 76,388.67 : x
  2. Step 2: Convert to fraction form
    126,318.83/189,383.40 = 76,388.67/x
  3. Step 3: Cross multiply
    126,318.83x = 189,383.40 × 76,388.67
  4. Step 4: Simplify right side
    126,318.83x = 14,466,746,046.08
  5. Step 5: Solve for x
    x = 14,466,746,046.08/126,318.83
  6. Step 6: Final answer
    x = 114,525.65

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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.