Home / 143,435.35-197,947.80-79,771.78

Finding the Fourth Proportional to 143,435.35, 197,947.80 and 79,771.78

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Solution

The fourth proportional to 143,435.35, 197,947.80 and 79,771.78 is: 110,088.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,435.35 : 197,947.80 = 79,771.78 : x
  2. Step 2: Convert to fraction form
    143,435.35/197,947.80 = 79,771.78/x
  3. Step 3: Cross multiply
    143,435.35x = 197,947.80 × 79,771.78
  4. Step 4: Simplify right side
    143,435.35x = 15,790,648,600.52
  5. Step 5: Solve for x
    x = 15,790,648,600.52/143,435.35
  6. Step 6: Final answer
    x = 110,088.96

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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.