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Finding the Fourth Proportional to 138,267.71, 207,431.81 and 44,782.91

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Solution

The fourth proportional to 138,267.71, 207,431.81 and 44,782.91 is: 67,184.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,267.71 : 207,431.81 = 44,782.91 : x
  2. Step 2: Convert to fraction form
    138,267.71/207,431.81 = 44,782.91/x
  3. Step 3: Cross multiply
    138,267.71x = 207,431.81 × 44,782.91
  4. Step 4: Simplify right side
    138,267.71x = 9,289,400,078.37
  5. Step 5: Solve for x
    x = 9,289,400,078.37/138,267.71
  6. Step 6: Final answer
    x = 67,184.16

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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.