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Finding the Fourth Proportional to 163,539, 245,385.92 and 68,789.92

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Solution

The fourth proportional to 163,539, 245,385.92 and 68,789.92 is: 103,217.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,539 : 245,385.92 = 68,789.92 : x
  2. Step 2: Convert to fraction form
    163,539/245,385.92 = 68,789.92/x
  3. Step 3: Cross multiply
    163,539x = 245,385.92 × 68,789.92
  4. Step 4: Simplify right side
    163,539x = 16,880,077,805.93
  5. Step 5: Solve for x
    x = 16,880,077,805.93/163,539
  6. Step 6: Final answer
    x = 103,217.45

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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.