Home / 143,994-198,711.14-80,331.72

Finding the Fourth Proportional to 143,994, 198,711.14 and 80,331.72

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Solution

The fourth proportional to 143,994, 198,711.14 and 80,331.72 is: 110,857.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,994 : 198,711.14 = 80,331.72 : x
  2. Step 2: Convert to fraction form
    143,994/198,711.14 = 80,331.72/x
  3. Step 3: Cross multiply
    143,994x = 198,711.14 × 80,331.72
  4. Step 4: Simplify right side
    143,994x = 15,962,807,659.36
  5. Step 5: Solve for x
    x = 15,962,807,659.36/143,994
  6. Step 6: Final answer
    x = 110,857.45

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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.