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Finding the Fourth Proportional to 138,155.36, 207,240.32 and 44,668.40

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Solution

The fourth proportional to 138,155.36, 207,240.32 and 44,668.40 is: 67,004.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,155.36 : 207,240.32 = 44,668.40 : x
  2. Step 2: Convert to fraction form
    138,155.36/207,240.32 = 44,668.40/x
  3. Step 3: Cross multiply
    138,155.36x = 207,240.32 × 44,668.40
  4. Step 4: Simplify right side
    138,155.36x = 9,257,092,585.36
  5. Step 5: Solve for x
    x = 9,257,092,585.36/138,155.36
  6. Step 6: Final answer
    x = 67,004.95

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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.