Home / 129,789.95-179,148.44-76,086.59

Finding the Fourth Proportional to 129,789.95, 179,148.44 and 76,086.59

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Solution

The fourth proportional to 129,789.95, 179,148.44 and 76,086.59 is: 105,021.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,789.95 : 179,148.44 = 76,086.59 : x
  2. Step 2: Convert to fraction form
    129,789.95/179,148.44 = 76,086.59/x
  3. Step 3: Cross multiply
    129,789.95x = 179,148.44 × 76,086.59
  4. Step 4: Simplify right side
    129,789.95x = 13,630,793,522.99
  5. Step 5: Solve for x
    x = 13,630,793,522.99/129,789.95
  6. Step 6: Final answer
    x = 105,021.95

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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.