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Finding the Fourth Proportional to 189,454.80, 261,499.14 and 108,890.58

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Solution

The fourth proportional to 189,454.80, 261,499.14 and 108,890.58 is: 150,298.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,454.80 : 261,499.14 = 108,890.58 : x
  2. Step 2: Convert to fraction form
    189,454.80/261,499.14 = 108,890.58/x
  3. Step 3: Cross multiply
    189,454.80x = 261,499.14 × 108,890.58
  4. Step 4: Simplify right side
    189,454.80x = 28,474,793,024.10
  5. Step 5: Solve for x
    x = 28,474,793,024.10/189,454.80
  6. Step 6: Final answer
    x = 150,298.61

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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.