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Finding the Fourth Proportional to 138,467.89, 207,739.03 and 43,701.74

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Solution

The fourth proportional to 138,467.89, 207,739.03 and 43,701.74 is: 65,564.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,467.89 : 207,739.03 = 43,701.74 : x
  2. Step 2: Convert to fraction form
    138,467.89/207,739.03 = 43,701.74/x
  3. Step 3: Cross multiply
    138,467.89x = 207,739.03 × 43,701.74
  4. Step 4: Simplify right side
    138,467.89x = 9,078,555,819.71
  5. Step 5: Solve for x
    x = 9,078,555,819.71/138,467.89
  6. Step 6: Final answer
    x = 65,564.34

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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.