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Finding the Fourth Proportional to 129,803.94, 179,131.50 and 73,216.44

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Solution

The fourth proportional to 129,803.94, 179,131.50 and 73,216.44 is: 101,039.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,803.94 : 179,131.50 = 73,216.44 : x
  2. Step 2: Convert to fraction form
    129,803.94/179,131.50 = 73,216.44/x
  3. Step 3: Cross multiply
    129,803.94x = 179,131.50 × 73,216.44
  4. Step 4: Simplify right side
    129,803.94x = 13,115,370,721.86
  5. Step 5: Solve for x
    x = 13,115,370,721.86/129,803.94
  6. Step 6: Final answer
    x = 101,039.85

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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.