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Finding the Fourth Proportional to 163,574.62, 225,736.62 and 99,947.50

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Solution

The fourth proportional to 163,574.62, 225,736.62 and 99,947.50 is: 137,929.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,574.62 : 225,736.62 = 99,947.50 : x
  2. Step 2: Convert to fraction form
    163,574.62/225,736.62 = 99,947.50/x
  3. Step 3: Cross multiply
    163,574.62x = 225,736.62 × 99,947.50
  4. Step 4: Simplify right side
    163,574.62x = 22,561,810,827.45
  5. Step 5: Solve for x
    x = 22,561,810,827.45/163,574.62
  6. Step 6: Final answer
    x = 137,929.78

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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.