Home / 129,336.40-194,004.60-120,005.20

Finding the Fourth Proportional to 129,336.40, 194,004.60 and 120,005.20

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Solution

The fourth proportional to 129,336.40, 194,004.60 and 120,005.20 is: 180,007.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,336.40 : 194,004.60 = 120,005.20 : x
  2. Step 2: Convert to fraction form
    129,336.40/194,004.60 = 120,005.20/x
  3. Step 3: Cross multiply
    129,336.40x = 194,004.60 × 120,005.20
  4. Step 4: Simplify right side
    129,336.40x = 23,281,560,823.92
  5. Step 5: Solve for x
    x = 23,281,560,823.92/129,336.40
  6. Step 6: Final answer
    x = 180,007.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.