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Finding the Fourth Proportional to 131,491.60, 197,237.40 and 126,242.80

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Solution

The fourth proportional to 131,491.60, 197,237.40 and 126,242.80 is: 189,364.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,491.60 : 197,237.40 = 126,242.80 : x
  2. Step 2: Convert to fraction form
    131,491.60/197,237.40 = 126,242.80/x
  3. Step 3: Cross multiply
    131,491.60x = 197,237.40 × 126,242.80
  4. Step 4: Simplify right side
    131,491.60x = 24,899,801,640.72
  5. Step 5: Solve for x
    x = 24,899,801,640.72/131,491.60
  6. Step 6: Final answer
    x = 189,364.20

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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.