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Finding the Fourth Proportional to 126,369.20, 189,424.20 and 73,751.60

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Solution

The fourth proportional to 126,369.20, 189,424.20 and 73,751.60 is: 110,551.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,369.20 : 189,424.20 = 73,751.60 : x
  2. Step 2: Convert to fraction form
    126,369.20/189,424.20 = 73,751.60/x
  3. Step 3: Cross multiply
    126,369.20x = 189,424.20 × 73,751.60
  4. Step 4: Simplify right side
    126,369.20x = 13,970,337,828.72
  5. Step 5: Solve for x
    x = 13,970,337,828.72/126,369.20
  6. Step 6: Final answer
    x = 110,551.76

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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.