Home / 163,346.32-225,442.38-99,721

Finding the Fourth Proportional to 163,346.32, 225,442.38 and 99,721

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Solution

The fourth proportional to 163,346.32, 225,442.38 and 99,721 is: 137,629.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,346.32 : 225,442.38 = 99,721 : x
  2. Step 2: Convert to fraction form
    163,346.32/225,442.38 = 99,721/x
  3. Step 3: Cross multiply
    163,346.32x = 225,442.38 × 99,721
  4. Step 4: Simplify right side
    163,346.32x = 22,481,339,575.98
  5. Step 5: Solve for x
    x = 22,481,339,575.98/163,346.32
  6. Step 6: Final answer
    x = 137,629.91

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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.