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Finding the Fourth Proportional to 139,630.39, 207,866.24 and 138,800.01

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Solution

The fourth proportional to 139,630.39, 207,866.24 and 138,800.01 is: 206,630.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,630.39 : 207,866.24 = 138,800.01 : x
  2. Step 2: Convert to fraction form
    139,630.39/207,866.24 = 138,800.01/x
  3. Step 3: Cross multiply
    139,630.39x = 207,866.24 × 138,800.01
  4. Step 4: Simplify right side
    139,630.39x = 28,851,836,190.66
  5. Step 5: Solve for x
    x = 28,851,836,190.66/139,630.39
  6. Step 6: Final answer
    x = 206,630.06

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.