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Finding the Fourth Proportional to 163,347.32, 225,443.76 and 99,722

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Solution

The fourth proportional to 163,347.32, 225,443.76 and 99,722 is: 137,631.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,347.32 : 225,443.76 = 99,722 : x
  2. Step 2: Convert to fraction form
    163,347.32/225,443.76 = 99,722/x
  3. Step 3: Cross multiply
    163,347.32x = 225,443.76 × 99,722
  4. Step 4: Simplify right side
    163,347.32x = 22,481,702,634.72
  5. Step 5: Solve for x
    x = 22,481,702,634.72/163,347.32
  6. Step 6: Final answer
    x = 137,631.29

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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.