Home / 143,583.28-198,137.16-79,039.94

Finding the Fourth Proportional to 143,583.28, 198,137.16 and 79,039.94

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Solution

The fourth proportional to 143,583.28, 198,137.16 and 79,039.94 is: 109,070.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,583.28 : 198,137.16 = 79,039.94 : x
  2. Step 2: Convert to fraction form
    143,583.28/198,137.16 = 79,039.94/x
  3. Step 3: Cross multiply
    143,583.28x = 198,137.16 × 79,039.94
  4. Step 4: Simplify right side
    143,583.28x = 15,660,749,238.17
  5. Step 5: Solve for x
    x = 15,660,749,238.17/143,583.28
  6. Step 6: Final answer
    x = 109,070.84

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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.