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Finding the Fourth Proportional to 138,468.01, 207,739.21 and 43,701.86

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Solution

The fourth proportional to 138,468.01, 207,739.21 and 43,701.86 is: 65,564.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,468.01 : 207,739.21 = 43,701.86 : x
  2. Step 2: Convert to fraction form
    138,468.01/207,739.21 = 43,701.86/x
  3. Step 3: Cross multiply
    138,468.01x = 207,739.21 × 43,701.86
  4. Step 4: Simplify right side
    138,468.01x = 9,078,589,871.93
  5. Step 5: Solve for x
    x = 9,078,589,871.93/138,468.01
  6. Step 6: Final answer
    x = 65,564.53

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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.