Home / 217,867.62-300,650.77-121,071.15

Finding the Fourth Proportional to 217,867.62, 300,650.77 and 121,071.15

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Solution

The fourth proportional to 217,867.62, 300,650.77 and 121,071.15 is: 167,074.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,867.62 : 300,650.77 = 121,071.15 : x
  2. Step 2: Convert to fraction form
    217,867.62/300,650.77 = 121,071.15/x
  3. Step 3: Cross multiply
    217,867.62x = 300,650.77 × 121,071.15
  4. Step 4: Simplify right side
    217,867.62x = 36,400,133,866.93
  5. Step 5: Solve for x
    x = 36,400,133,866.93/217,867.62
  6. Step 6: Final answer
    x = 167,074.55

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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.