Home / 143,648.64-198,238.32-79,992.36

Finding the Fourth Proportional to 143,648.64, 198,238.32 and 79,992.36

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Solution

The fourth proportional to 143,648.64, 198,238.32 and 79,992.36 is: 110,391.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,648.64 : 198,238.32 = 79,992.36 : x
  2. Step 2: Convert to fraction form
    143,648.64/198,238.32 = 79,992.36/x
  3. Step 3: Cross multiply
    143,648.64x = 198,238.32 × 79,992.36
  4. Step 4: Simplify right side
    143,648.64x = 15,857,551,059.24
  5. Step 5: Solve for x
    x = 15,857,551,059.24/143,648.64
  6. Step 6: Final answer
    x = 110,391.24

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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.