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Finding the Fourth Proportional to 189,495.96, 261,500.20 and 103,451.64

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Solution

The fourth proportional to 189,495.96, 261,500.20 and 103,451.64 is: 142,760.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,495.96 : 261,500.20 = 103,451.64 : x
  2. Step 2: Convert to fraction form
    189,495.96/261,500.20 = 103,451.64/x
  3. Step 3: Cross multiply
    189,495.96x = 261,500.20 × 103,451.64
  4. Step 4: Simplify right side
    189,495.96x = 27,052,624,550.33
  5. Step 5: Solve for x
    x = 27,052,624,550.33/189,495.96
  6. Step 6: Final answer
    x = 142,760.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.