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Finding the Fourth Proportional to 189,471.62, 261,472.65 and 104,586.86

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Solution

The fourth proportional to 189,471.62, 261,472.65 and 104,586.86 is: 144,330.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,471.62 : 261,472.65 = 104,586.86 : x
  2. Step 2: Convert to fraction form
    189,471.62/261,472.65 = 104,586.86/x
  3. Step 3: Cross multiply
    189,471.62x = 261,472.65 × 104,586.86
  4. Step 4: Simplify right side
    189,471.62x = 27,346,603,439.38
  5. Step 5: Solve for x
    x = 27,346,603,439.38/189,471.62
  6. Step 6: Final answer
    x = 144,330.87

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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.