Home / 143,268.80-197,711.82-78,737.36

Finding the Fourth Proportional to 143,268.80, 197,711.82 and 78,737.36

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Solution

The fourth proportional to 143,268.80, 197,711.82 and 78,737.36 is: 108,658.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,268.80 : 197,711.82 = 78,737.36 : x
  2. Step 2: Convert to fraction form
    143,268.80/197,711.82 = 78,737.36/x
  3. Step 3: Cross multiply
    143,268.80x = 197,711.82 × 78,737.36
  4. Step 4: Simplify right side
    143,268.80x = 15,567,306,747.60
  5. Step 5: Solve for x
    x = 15,567,306,747.60/143,268.80
  6. Step 6: Final answer
    x = 108,658.04

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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.