Home / 143,770.83-198,415.15-79,251.54

Finding the Fourth Proportional to 143,770.83, 198,415.15 and 79,251.54

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Solution

The fourth proportional to 143,770.83, 198,415.15 and 79,251.54 is: 109,373.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,770.83 : 198,415.15 = 79,251.54 : x
  2. Step 2: Convert to fraction form
    143,770.83/198,415.15 = 79,251.54/x
  3. Step 3: Cross multiply
    143,770.83x = 198,415.15 × 79,251.54
  4. Step 4: Simplify right side
    143,770.83x = 15,724,705,254.65
  5. Step 5: Solve for x
    x = 15,724,705,254.65/143,770.83
  6. Step 6: Final answer
    x = 109,373.41

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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.