Home / 129,726.48-179,022.78-73,137.72

Finding the Fourth Proportional to 129,726.48, 179,022.78 and 73,137.72

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Solution

The fourth proportional to 129,726.48, 179,022.78 and 73,137.72 is: 100,930.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,726.48 : 179,022.78 = 73,137.72 : x
  2. Step 2: Convert to fraction form
    129,726.48/179,022.78 = 73,137.72/x
  3. Step 3: Cross multiply
    129,726.48x = 179,022.78 × 73,137.72
  4. Step 4: Simplify right side
    129,726.48x = 13,093,317,957.26
  5. Step 5: Solve for x
    x = 13,093,317,957.26/129,726.48
  6. Step 6: Final answer
    x = 100,930.19

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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.