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Finding the Fourth Proportional to 138,326.01, 207,541.30 and 54,146.33

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Solution

The fourth proportional to 138,326.01, 207,541.30 and 54,146.33 is: 81,239.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,326.01 : 207,541.30 = 54,146.33 : x
  2. Step 2: Convert to fraction form
    138,326.01/207,541.30 = 54,146.33/x
  3. Step 3: Cross multiply
    138,326.01x = 207,541.30 × 54,146.33
  4. Step 4: Simplify right side
    138,326.01x = 11,237,599,718.43
  5. Step 5: Solve for x
    x = 11,237,599,718.43/138,326.01
  6. Step 6: Final answer
    x = 81,239.96

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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.