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Finding the Fourth Proportional to 131,790.80, 197,647.80 and 47,541.20

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Solution

The fourth proportional to 131,790.80, 197,647.80 and 47,541.20 is: 71,297.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,790.80 : 197,647.80 = 47,541.20 : x
  2. Step 2: Convert to fraction form
    131,790.80/197,647.80 = 47,541.20/x
  3. Step 3: Cross multiply
    131,790.80x = 197,647.80 × 47,541.20
  4. Step 4: Simplify right side
    131,790.80x = 9,396,413,589.36
  5. Step 5: Solve for x
    x = 9,396,413,589.36/131,790.80
  6. Step 6: Final answer
    x = 71,297.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.