Home / 143,585.13-198,147.51-79,921.56

Finding the Fourth Proportional to 143,585.13, 198,147.51 and 79,921.56

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Solution

The fourth proportional to 143,585.13, 198,147.51 and 79,921.56 is: 110,291.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,585.13 : 198,147.51 = 79,921.56 : x
  2. Step 2: Convert to fraction form
    143,585.13/198,147.51 = 79,921.56/x
  3. Step 3: Cross multiply
    143,585.13x = 198,147.51 × 79,921.56
  4. Step 4: Simplify right side
    143,585.13x = 15,836,258,109.32
  5. Step 5: Solve for x
    x = 15,836,258,109.32/143,585.13
  6. Step 6: Final answer
    x = 110,291.77

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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.