Home / 143,838.40-198,499.60-80,169.36

Finding the Fourth Proportional to 143,838.40, 198,499.60 and 80,169.36

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Solution

The fourth proportional to 143,838.40, 198,499.60 and 80,169.36 is: 110,635.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,838.40 : 198,499.60 = 80,169.36 : x
  2. Step 2: Convert to fraction form
    143,838.40/198,499.60 = 80,169.36/x
  3. Step 3: Cross multiply
    143,838.40x = 198,499.60 × 80,169.36
  4. Step 4: Simplify right side
    143,838.40x = 15,913,585,892.26
  5. Step 5: Solve for x
    x = 15,913,585,892.26/143,838.40
  6. Step 6: Final answer
    x = 110,635.17

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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.