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Finding the Fourth Proportional to 129,758.58, 179,069.16 and 76,058.82

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Solution

The fourth proportional to 129,758.58, 179,069.16 and 76,058.82 is: 104,962.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,758.58 : 179,069.16 = 76,058.82 : x
  2. Step 2: Convert to fraction form
    129,758.58/179,069.16 = 76,058.82/x
  3. Step 3: Cross multiply
    129,758.58x = 179,069.16 × 76,058.82
  4. Step 4: Simplify right side
    129,758.58x = 13,619,789,007.99
  5. Step 5: Solve for x
    x = 13,619,789,007.99/129,758.58
  6. Step 6: Final answer
    x = 104,962.53

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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.