Home / 129,726.63-179,022.46-73,137.60

Finding the Fourth Proportional to 129,726.63, 179,022.46 and 73,137.60

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Solution

The fourth proportional to 129,726.63, 179,022.46 and 73,137.60 is: 100,929.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,726.63 : 179,022.46 = 73,137.60 : x
  2. Step 2: Convert to fraction form
    129,726.63/179,022.46 = 73,137.60/x
  3. Step 3: Cross multiply
    129,726.63x = 179,022.46 × 73,137.60
  4. Step 4: Simplify right side
    129,726.63x = 13,093,273,070.50
  5. Step 5: Solve for x
    x = 13,093,273,070.50/129,726.63
  6. Step 6: Final answer
    x = 100,929.72

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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.