Home / 129,780.80-194,498.40-92,801.60

Finding the Fourth Proportional to 129,780.80, 194,498.40 and 92,801.60

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Solution

The fourth proportional to 129,780.80, 194,498.40 and 92,801.60 is: 139,078.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,780.80 : 194,498.40 = 92,801.60 : x
  2. Step 2: Convert to fraction form
    129,780.80/194,498.40 = 92,801.60/x
  3. Step 3: Cross multiply
    129,780.80x = 194,498.40 × 92,801.60
  4. Step 4: Simplify right side
    129,780.80x = 18,049,762,717.44
  5. Step 5: Solve for x
    x = 18,049,762,717.44/129,780.80
  6. Step 6: Final answer
    x = 139,078.84

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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.