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Finding the Fourth Proportional to 163,468.80, 225,604.80 and 99,806.40

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Solution

The fourth proportional to 163,468.80, 225,604.80 and 99,806.40 is: 137,743.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,468.80 : 225,604.80 = 99,806.40 : x
  2. Step 2: Convert to fraction form
    163,468.80/225,604.80 = 99,806.40/x
  3. Step 3: Cross multiply
    163,468.80x = 225,604.80 × 99,806.40
  4. Step 4: Simplify right side
    163,468.80x = 22,516,802,910.72
  5. Step 5: Solve for x
    x = 22,516,802,910.72/163,468.80
  6. Step 6: Final answer
    x = 137,743.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.