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Finding the Fourth Proportional to 138,511.62, 207,789.30 and 44,995.50

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Solution

The fourth proportional to 138,511.62, 207,789.30 and 44,995.50 is: 67,500.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,511.62 : 207,789.30 = 44,995.50 : x
  2. Step 2: Convert to fraction form
    138,511.62/207,789.30 = 44,995.50/x
  3. Step 3: Cross multiply
    138,511.62x = 207,789.30 × 44,995.50
  4. Step 4: Simplify right side
    138,511.62x = 9,349,583,448.15
  5. Step 5: Solve for x
    x = 9,349,583,448.15/138,511.62
  6. Step 6: Final answer
    x = 67,500.35

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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.