Home / 129,336.52-178,483.10-71,974.86

Finding the Fourth Proportional to 129,336.52, 178,483.10 and 71,974.86

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Solution

The fourth proportional to 129,336.52, 178,483.10 and 71,974.86 is: 99,324.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,336.52 : 178,483.10 = 71,974.86 : x
  2. Step 2: Convert to fraction form
    129,336.52/178,483.10 = 71,974.86/x
  3. Step 3: Cross multiply
    129,336.52x = 178,483.10 × 71,974.86
  4. Step 4: Simplify right side
    129,336.52x = 12,846,296,134.87
  5. Step 5: Solve for x
    x = 12,846,296,134.87/129,336.52
  6. Step 6: Final answer
    x = 99,324.58

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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.