Home / 143,649.64-198,239.70-79,993.36

Finding the Fourth Proportional to 143,649.64, 198,239.70 and 79,993.36

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Solution

The fourth proportional to 143,649.64, 198,239.70 and 79,993.36 is: 110,392.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,649.64 : 198,239.70 = 79,993.36 : x
  2. Step 2: Convert to fraction form
    143,649.64/198,239.70 = 79,993.36/x
  3. Step 3: Cross multiply
    143,649.64x = 198,239.70 × 79,993.36
  4. Step 4: Simplify right side
    143,649.64x = 15,857,859,688.39
  5. Step 5: Solve for x
    x = 15,857,859,688.39/143,649.64
  6. Step 6: Final answer
    x = 110,392.62

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1.5x scale

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.