Home / 217,332.82-299,919.09-121,839.54

Finding the Fourth Proportional to 217,332.82, 299,919.09 and 121,839.54

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Solution

The fourth proportional to 217,332.82, 299,919.09 and 121,839.54 is: 168,138.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,332.82 : 299,919.09 = 121,839.54 : x
  2. Step 2: Convert to fraction form
    217,332.82/299,919.09 = 121,839.54/x
  3. Step 3: Cross multiply
    217,332.82x = 299,919.09 × 121,839.54
  4. Step 4: Simplify right side
    217,332.82x = 36,542,003,962.82
  5. Step 5: Solve for x
    x = 36,542,003,962.82/217,332.82
  6. Step 6: Final answer
    x = 168,138.45

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1.5x scale

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.