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Finding the Fourth Proportional to 138,564.28, 207,712.77 and 63,735.67

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Solution

The fourth proportional to 138,564.28, 207,712.77 and 63,735.67 is: 95,542.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,564.28 : 207,712.77 = 63,735.67 : x
  2. Step 2: Convert to fraction form
    138,564.28/207,712.77 = 63,735.67/x
  3. Step 3: Cross multiply
    138,564.28x = 207,712.77 × 63,735.67
  4. Step 4: Simplify right side
    138,564.28x = 13,238,712,563.51
  5. Step 5: Solve for x
    x = 13,238,712,563.51/138,564.28
  6. Step 6: Final answer
    x = 95,542.03

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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.