Home / 142,812.80-197,074.07-82,379.83

Finding the Fourth Proportional to 142,812.80, 197,074.07 and 82,379.83

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Solution

The fourth proportional to 142,812.80, 197,074.07 and 82,379.83 is: 113,679.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,812.80 : 197,074.07 = 82,379.83 : x
  2. Step 2: Convert to fraction form
    142,812.80/197,074.07 = 82,379.83/x
  3. Step 3: Cross multiply
    142,812.80x = 197,074.07 × 82,379.83
  4. Step 4: Simplify right side
    142,812.80x = 16,234,927,972.11
  5. Step 5: Solve for x
    x = 16,234,927,972.11/142,812.80
  6. Step 6: Final answer
    x = 113,679.79

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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.