Home / 217,128.00-299,636.44-121,635.38

Finding the Fourth Proportional to 217,128.00, 299,636.44 and 121,635.38

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Solution

The fourth proportional to 217,128.00, 299,636.44 and 121,635.38 is: 167,856.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,128.00 : 299,636.44 = 121,635.38 : x
  2. Step 2: Convert to fraction form
    217,128.00/299,636.44 = 121,635.38/x
  3. Step 3: Cross multiply
    217,128.00x = 299,636.44 × 121,635.38
  4. Step 4: Simplify right side
    217,128.00x = 36,446,391,633.07
  5. Step 5: Solve for x
    x = 36,446,391,633.07/217,128.00
  6. Step 6: Final answer
    x = 167,856.71

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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.