Home / 129,656.20-194,225.10-74,187.40

Finding the Fourth Proportional to 129,656.20, 194,225.10 and 74,187.40

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Solution

The fourth proportional to 129,656.20, 194,225.10 and 74,187.40 is: 111,132.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,656.20 : 194,225.10 = 74,187.40 : x
  2. Step 2: Convert to fraction form
    129,656.20/194,225.10 = 74,187.40/x
  3. Step 3: Cross multiply
    129,656.20x = 194,225.10 × 74,187.40
  4. Step 4: Simplify right side
    129,656.20x = 14,409,055,183.74
  5. Step 5: Solve for x
    x = 14,409,055,183.74/129,656.20
  6. Step 6: Final answer
    x = 111,132.79

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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.