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Finding the Fourth Proportional to 129,900, 179,262.12 and 73,310.16

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Solution

The fourth proportional to 129,900, 179,262.12 and 73,310.16 is: 101,168.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,900 : 179,262.12 = 73,310.16 : x
  2. Step 2: Convert to fraction form
    129,900/179,262.12 = 73,310.16/x
  3. Step 3: Cross multiply
    129,900x = 179,262.12 × 73,310.16
  4. Step 4: Simplify right side
    129,900x = 13,141,734,699.14
  5. Step 5: Solve for x
    x = 13,141,734,699.14/129,900
  6. Step 6: Final answer
    x = 101,168.09

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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.