Home / 143,570.75-198,124.13-79,039.46

Finding the Fourth Proportional to 143,570.75, 198,124.13 and 79,039.46

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Solution

The fourth proportional to 143,570.75, 198,124.13 and 79,039.46 is: 109,072.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,570.75 : 198,124.13 = 79,039.46 : x
  2. Step 2: Convert to fraction form
    143,570.75/198,124.13 = 79,039.46/x
  3. Step 3: Cross multiply
    143,570.75x = 198,124.13 × 79,039.46
  4. Step 4: Simplify right side
    143,570.75x = 15,659,624,248.17
  5. Step 5: Solve for x
    x = 15,659,624,248.17/143,570.75
  6. Step 6: Final answer
    x = 109,072.53

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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.