Home / 138,439.22-191,046.14-74,777.03

Finding the Fourth Proportional to 138,439.22, 191,046.14 and 74,777.03

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Solution

The fourth proportional to 138,439.22, 191,046.14 and 74,777.03 is: 103,192.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,439.22 : 191,046.14 = 74,777.03 : x
  2. Step 2: Convert to fraction form
    138,439.22/191,046.14 = 74,777.03/x
  3. Step 3: Cross multiply
    138,439.22x = 191,046.14 × 74,777.03
  4. Step 4: Simplify right side
    138,439.22x = 14,285,861,613.05
  5. Step 5: Solve for x
    x = 14,285,861,613.05/138,439.22
  6. Step 6: Final answer
    x = 103,192.30

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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.