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Finding the Fourth Proportional to 129,803.91, 179,137.76 and 73,214.07

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Solution

The fourth proportional to 129,803.91, 179,137.76 and 73,214.07 is: 101,040.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,803.91 : 179,137.76 = 73,214.07 : x
  2. Step 2: Convert to fraction form
    129,803.91/179,137.76 = 73,214.07/x
  3. Step 3: Cross multiply
    129,803.91x = 179,137.76 × 73,214.07
  4. Step 4: Simplify right side
    129,803.91x = 13,115,404,134.21
  5. Step 5: Solve for x
    x = 13,115,404,134.21/129,803.91
  6. Step 6: Final answer
    x = 101,040.13

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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.