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Finding the Fourth Proportional to 163,138.30, 244,513.05 and 68,368.30

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Solution

The fourth proportional to 163,138.30, 244,513.05 and 68,368.30 is: 102,470.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,138.30 : 244,513.05 = 68,368.30 : x
  2. Step 2: Convert to fraction form
    163,138.30/244,513.05 = 68,368.30/x
  3. Step 3: Cross multiply
    163,138.30x = 244,513.05 × 68,368.30
  4. Step 4: Simplify right side
    163,138.30x = 16,716,941,556.32
  5. Step 5: Solve for x
    x = 16,716,941,556.32/163,138.30
  6. Step 6: Final answer
    x = 102,470.98

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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.