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Finding the Fourth Proportional to 131,662.30, 197,493.45 and 57,790.30

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Solution

The fourth proportional to 131,662.30, 197,493.45 and 57,790.30 is: 86,685.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,662.30 : 197,493.45 = 57,790.30 : x
  2. Step 2: Convert to fraction form
    131,662.30/197,493.45 = 57,790.30/x
  3. Step 3: Cross multiply
    131,662.30x = 197,493.45 × 57,790.30
  4. Step 4: Simplify right side
    131,662.30x = 11,413,205,723.54
  5. Step 5: Solve for x
    x = 11,413,205,723.54/131,662.30
  6. Step 6: Final answer
    x = 86,685.45

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Similar ratio
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1.5x scale

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.