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Finding the Fourth Proportional to 129,762.64, 179,072.46 and 73,174.03

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Solution

The fourth proportional to 129,762.64, 179,072.46 and 73,174.03 is: 100,980.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,762.64 : 179,072.46 = 73,174.03 : x
  2. Step 2: Convert to fraction form
    129,762.64/179,072.46 = 73,174.03/x
  3. Step 3: Cross multiply
    129,762.64x = 179,072.46 × 73,174.03
  4. Step 4: Simplify right side
    129,762.64x = 13,103,453,560.21
  5. Step 5: Solve for x
    x = 13,103,453,560.21/129,762.64
  6. Step 6: Final answer
    x = 100,980.17

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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.