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Finding the Fourth Proportional to 126,477.20, 189,586.20 and 73,859.60

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Solution

The fourth proportional to 126,477.20, 189,586.20 and 73,859.60 is: 110,713.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,477.20 : 189,586.20 = 73,859.60 : x
  2. Step 2: Convert to fraction form
    126,477.20/189,586.20 = 73,859.60/x
  3. Step 3: Cross multiply
    126,477.20x = 189,586.20 × 73,859.60
  4. Step 4: Simplify right side
    126,477.20x = 14,002,760,897.52
  5. Step 5: Solve for x
    x = 14,002,760,897.52/126,477.20
  6. Step 6: Final answer
    x = 110,713.72

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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.