Home / 189,620.12-261,671.18-109,045.88

Finding the Fourth Proportional to 189,620.12, 261,671.18 and 109,045.88

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Solution

The fourth proportional to 189,620.12, 261,671.18 and 109,045.88 is: 150,480.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,620.12 : 261,671.18 = 109,045.88 : x
  2. Step 2: Convert to fraction form
    189,620.12/261,671.18 = 109,045.88/x
  3. Step 3: Cross multiply
    189,620.12x = 261,671.18 × 109,045.88
  4. Step 4: Simplify right side
    189,620.12x = 28,534,163,221.42
  5. Step 5: Solve for x
    x = 28,534,163,221.42/189,620.12
  6. Step 6: Final answer
    x = 150,480.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.