Home / 143,564.40-215,249.40-76,107.60

Finding the Fourth Proportional to 143,564.40, 215,249.40 and 76,107.60

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Solution

The fourth proportional to 143,564.40, 215,249.40 and 76,107.60 is: 114,109.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,564.40 : 215,249.40 = 76,107.60 : x
  2. Step 2: Convert to fraction form
    143,564.40/215,249.40 = 76,107.60/x
  3. Step 3: Cross multiply
    143,564.40x = 215,249.40 × 76,107.60
  4. Step 4: Simplify right side
    143,564.40x = 16,382,115,235.44
  5. Step 5: Solve for x
    x = 16,382,115,235.44/143,564.40
  6. Step 6: Final answer
    x = 114,109.87

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1.5x scale

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.