Home / 139,789.80-192,912.14-76,127.54

Finding the Fourth Proportional to 139,789.80, 192,912.14 and 76,127.54

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Solution

The fourth proportional to 139,789.80, 192,912.14 and 76,127.54 is: 105,057.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,789.80 : 192,912.14 = 76,127.54 : x
  2. Step 2: Convert to fraction form
    139,789.80/192,912.14 = 76,127.54/x
  3. Step 3: Cross multiply
    139,789.80x = 192,912.14 × 76,127.54
  4. Step 4: Simplify right side
    139,789.80x = 14,685,926,654.34
  5. Step 5: Solve for x
    x = 14,685,926,654.34/139,789.80
  6. Step 6: Final answer
    x = 105,057.21

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1.5x scale

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.