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Finding the Fourth Proportional to 189,149.72, 261,026.52 and 104,268.20

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Solution

The fourth proportional to 189,149.72, 261,026.52 and 104,268.20 is: 143,890.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,149.72 : 261,026.52 = 104,268.20 : x
  2. Step 2: Convert to fraction form
    189,149.72/261,026.52 = 104,268.20/x
  3. Step 3: Cross multiply
    189,149.72x = 261,026.52 × 104,268.20
  4. Step 4: Simplify right side
    189,149.72x = 27,216,765,392.66
  5. Step 5: Solve for x
    x = 27,216,765,392.66/189,149.72
  6. Step 6: Final answer
    x = 143,890.06

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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.