Home / 129,930.36-179,333.64-76,217.64

Finding the Fourth Proportional to 129,930.36, 179,333.64 and 76,217.64

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Solution

The fourth proportional to 129,930.36, 179,333.64 and 76,217.64 is: 105,197.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,930.36 : 179,333.64 = 76,217.64 : x
  2. Step 2: Convert to fraction form
    129,930.36/179,333.64 = 76,217.64/x
  3. Step 3: Cross multiply
    129,930.36x = 179,333.64 × 76,217.64
  4. Step 4: Simplify right side
    129,930.36x = 13,668,386,813.41
  5. Step 5: Solve for x
    x = 13,668,386,813.41/129,930.36
  6. Step 6: Final answer
    x = 105,197.79

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1.5x scale

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.