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Finding the Fourth Proportional to 163,488.80, 245,233.20 and 84,627.20

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Solution

The fourth proportional to 163,488.80, 245,233.20 and 84,627.20 is: 126,940.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,488.80 : 245,233.20 = 84,627.20 : x
  2. Step 2: Convert to fraction form
    163,488.80/245,233.20 = 84,627.20/x
  3. Step 3: Cross multiply
    163,488.80x = 245,233.20 × 84,627.20
  4. Step 4: Simplify right side
    163,488.80x = 20,753,399,063.04
  5. Step 5: Solve for x
    x = 20,753,399,063.04/163,488.80
  6. Step 6: Final answer
    x = 126,940.80

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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.