Home / 412,667.45-618,986.58-113,143.22

Finding the Fourth Proportional to 412,667.45, 618,986.58 and 113,143.22

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Solution

The fourth proportional to 412,667.45, 618,986.58 and 113,143.22 is: 169,710.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,667.45 : 618,986.58 = 113,143.22 : x
  2. Step 2: Convert to fraction form
    412,667.45/618,986.58 = 113,143.22/x
  3. Step 3: Cross multiply
    412,667.45x = 618,986.58 × 113,143.22
  4. Step 4: Simplify right side
    412,667.45x = 70,034,131,703.05
  5. Step 5: Solve for x
    x = 70,034,131,703.05/412,667.45
  6. Step 6: Final answer
    x = 169,710.82

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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.