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Finding the Fourth Proportional to 131,460.40, 197,239.20 and 126,600.40

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Solution

The fourth proportional to 131,460.40, 197,239.20 and 126,600.40 is: 189,947.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,460.40 : 197,239.20 = 126,600.40 : x
  2. Step 2: Convert to fraction form
    131,460.40/197,239.20 = 126,600.40/x
  3. Step 3: Cross multiply
    131,460.40x = 197,239.20 × 126,600.40
  4. Step 4: Simplify right side
    131,460.40x = 24,970,561,615.68
  5. Step 5: Solve for x
    x = 24,970,561,615.68/131,460.40
  6. Step 6: Final answer
    x = 189,947.40

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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.