Home / 129,740.40-194,610.60-123,616.80

Finding the Fourth Proportional to 129,740.40, 194,610.60 and 123,616.80

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Solution

The fourth proportional to 129,740.40, 194,610.60 and 123,616.80 is: 185,425.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,740.40 : 194,610.60 = 123,616.80 : x
  2. Step 2: Convert to fraction form
    129,740.40/194,610.60 = 123,616.80/x
  3. Step 3: Cross multiply
    129,740.40x = 194,610.60 × 123,616.80
  4. Step 4: Simplify right side
    129,740.40x = 24,057,139,618.08
  5. Step 5: Solve for x
    x = 24,057,139,618.08/129,740.40
  6. Step 6: Final answer
    x = 185,425.20

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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.