Home / 143,595.45-215,393.18-80,609.85

Finding the Fourth Proportional to 143,595.45, 215,393.18 and 80,609.85

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Solution

The fourth proportional to 143,595.45, 215,393.18 and 80,609.85 is: 120,914.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,595.45 : 215,393.18 = 80,609.85 : x
  2. Step 2: Convert to fraction form
    143,595.45/215,393.18 = 80,609.85/x
  3. Step 3: Cross multiply
    143,595.45x = 215,393.18 × 80,609.85
  4. Step 4: Simplify right side
    143,595.45x = 17,362,811,527.77
  5. Step 5: Solve for x
    x = 17,362,811,527.77/143,595.45
  6. Step 6: Final answer
    x = 120,914.78

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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.