Home / 143,721.17-198,322.35-80,057.60

Finding the Fourth Proportional to 143,721.17, 198,322.35 and 80,057.60

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Solution

The fourth proportional to 143,721.17, 198,322.35 and 80,057.60 is: 110,472.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,721.17 : 198,322.35 = 80,057.60 : x
  2. Step 2: Convert to fraction form
    143,721.17/198,322.35 = 80,057.60/x
  3. Step 3: Cross multiply
    143,721.17x = 198,322.35 × 80,057.60
  4. Step 4: Simplify right side
    143,721.17x = 15,877,211,367.36
  5. Step 5: Solve for x
    x = 15,877,211,367.36/143,721.17
  6. Step 6: Final answer
    x = 110,472.32

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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.