Home / 217,140.66-299,660.01-121,645.29

Finding the Fourth Proportional to 217,140.66, 299,660.01 and 121,645.29

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Solution

The fourth proportional to 217,140.66, 299,660.01 and 121,645.29 is: 167,873.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,140.66 : 299,660.01 = 121,645.29 : x
  2. Step 2: Convert to fraction form
    217,140.66/299,660.01 = 121,645.29/x
  3. Step 3: Cross multiply
    217,140.66x = 299,660.01 × 121,645.29
  4. Step 4: Simplify right side
    217,140.66x = 36,452,228,817.85
  5. Step 5: Solve for x
    x = 36,452,228,817.85/217,140.66
  6. Step 6: Final answer
    x = 167,873.81

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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.