Home / 163,309.20-225,391.32-99,683.88

Finding the Fourth Proportional to 163,309.20, 225,391.32 and 99,683.88

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Solution

The fourth proportional to 163,309.20, 225,391.32 and 99,683.88 is: 137,578.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,309.20 : 225,391.32 = 99,683.88 : x
  2. Step 2: Convert to fraction form
    163,309.20/225,391.32 = 99,683.88/x
  3. Step 3: Cross multiply
    163,309.20x = 225,391.32 × 99,683.88
  4. Step 4: Simplify right side
    163,309.20x = 22,467,881,295.92
  5. Step 5: Solve for x
    x = 22,467,881,295.92/163,309.20
  6. Step 6: Final answer
    x = 137,578.78

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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.