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Finding the Fourth Proportional to 189,471.30, 261,468.36 and 104,586.54

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Solution

The fourth proportional to 189,471.30, 261,468.36 and 104,586.54 is: 144,328.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,471.30 : 261,468.36 = 104,586.54 : x
  2. Step 2: Convert to fraction form
    189,471.30/261,468.36 = 104,586.54/x
  3. Step 3: Cross multiply
    189,471.30x = 261,468.36 × 104,586.54
  4. Step 4: Simplify right side
    189,471.30x = 27,346,071,091.87
  5. Step 5: Solve for x
    x = 27,346,071,091.87/189,471.30
  6. Step 6: Final answer
    x = 144,328.30

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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.