Home / 143,839.40-215,783.36-43,976.20

Finding the Fourth Proportional to 143,839.40, 215,783.36 and 43,976.20

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Solution

The fourth proportional to 143,839.40, 215,783.36 and 43,976.20 is: 65,971.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,839.40 : 215,783.36 = 43,976.20 : x
  2. Step 2: Convert to fraction form
    143,839.40/215,783.36 = 43,976.20/x
  3. Step 3: Cross multiply
    143,839.40x = 215,783.36 × 43,976.20
  4. Step 4: Simplify right side
    143,839.40x = 9,489,332,196.03
  5. Step 5: Solve for x
    x = 9,489,332,196.03/143,839.40
  6. Step 6: Final answer
    x = 65,971.72

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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.