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Finding the Fourth Proportional to 129,773.94, 179,072.01 and 76,046.64

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Solution

The fourth proportional to 129,773.94, 179,072.01 and 76,046.64 is: 104,934.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,773.94 : 179,072.01 = 76,046.64 : x
  2. Step 2: Convert to fraction form
    129,773.94/179,072.01 = 76,046.64/x
  3. Step 3: Cross multiply
    129,773.94x = 179,072.01 × 76,046.64
  4. Step 4: Simplify right side
    129,773.94x = 13,617,824,678.55
  5. Step 5: Solve for x
    x = 13,617,824,678.55/129,773.94
  6. Step 6: Final answer
    x = 104,934.97

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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.