Home / 138,244.63-207,359.65-68,100.25

Finding the Fourth Proportional to 138,244.63, 207,359.65 and 68,100.25

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Solution

The fourth proportional to 138,244.63, 207,359.65 and 68,100.25 is: 102,146.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,244.63 : 207,359.65 = 68,100.25 : x
  2. Step 2: Convert to fraction form
    138,244.63/207,359.65 = 68,100.25/x
  3. Step 3: Cross multiply
    138,244.63x = 207,359.65 × 68,100.25
  4. Step 4: Simplify right side
    138,244.63x = 14,121,244,004.91
  5. Step 5: Solve for x
    x = 14,121,244,004.91/138,244.63
  6. Step 6: Final answer
    x = 102,146.78

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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.