Home / 129,790.95-179,149.82-76,087.59

Finding the Fourth Proportional to 129,790.95, 179,149.82 and 76,087.59

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Solution

The fourth proportional to 129,790.95, 179,149.82 and 76,087.59 is: 105,023.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,790.95 : 179,149.82 = 76,087.59 : x
  2. Step 2: Convert to fraction form
    129,790.95/179,149.82 = 76,087.59/x
  3. Step 3: Cross multiply
    129,790.95x = 179,149.82 × 76,087.59
  4. Step 4: Simplify right side
    129,790.95x = 13,631,078,052.73
  5. Step 5: Solve for x
    x = 13,631,078,052.73/129,790.95
  6. Step 6: Final answer
    x = 105,023.33

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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.