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Finding the Fourth Proportional to 131,457.40, 197,234.70 and 126,597.40

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Solution

The fourth proportional to 131,457.40, 197,234.70 and 126,597.40 is: 189,942.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,457.40 : 197,234.70 = 126,597.40 : x
  2. Step 2: Convert to fraction form
    131,457.40/197,234.70 = 126,597.40/x
  3. Step 3: Cross multiply
    131,457.40x = 197,234.70 × 126,597.40
  4. Step 4: Simplify right side
    131,457.40x = 24,969,400,209.78
  5. Step 5: Solve for x
    x = 24,969,400,209.78/131,457.40
  6. Step 6: Final answer
    x = 189,942.90

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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.