Home / 129,329.25-178,481.08-71,968.79

Finding the Fourth Proportional to 129,329.25, 178,481.08 and 71,968.79

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Solution

The fourth proportional to 129,329.25, 178,481.08 and 71,968.79 is: 99,320.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,329.25 : 178,481.08 = 71,968.79 : x
  2. Step 2: Convert to fraction form
    129,329.25/178,481.08 = 71,968.79/x
  3. Step 3: Cross multiply
    129,329.25x = 178,481.08 × 71,968.79
  4. Step 4: Simplify right side
    129,329.25x = 12,845,067,365.49
  5. Step 5: Solve for x
    x = 12,845,067,365.49/129,329.25
  6. Step 6: Final answer
    x = 99,320.67

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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.