Home / 189,455.56-261,457.38-108,909.16

Finding the Fourth Proportional to 189,455.56, 261,457.38 and 108,909.16

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Solution

The fourth proportional to 189,455.56, 261,457.38 and 108,909.16 is: 150,299.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,455.56 : 261,457.38 = 108,909.16 : x
  2. Step 2: Convert to fraction form
    189,455.56/261,457.38 = 108,909.16/x
  3. Step 3: Cross multiply
    189,455.56x = 261,457.38 × 108,909.16
  4. Step 4: Simplify right side
    189,455.56x = 28,475,103,631.60
  5. Step 5: Solve for x
    x = 28,475,103,631.60/189,455.56
  6. Step 6: Final answer
    x = 150,299.65

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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.