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Finding the Fourth Proportional to 189,449.70, 284,502.60 and 100,876.20

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Solution

The fourth proportional to 189,449.70, 284,502.60 and 100,876.20 is: 151,488.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,449.70 : 284,502.60 = 100,876.20 : x
  2. Step 2: Convert to fraction form
    189,449.70/284,502.60 = 100,876.20/x
  3. Step 3: Cross multiply
    189,449.70x = 284,502.60 × 100,876.20
  4. Step 4: Simplify right side
    189,449.70x = 28,699,541,178.12
  5. Step 5: Solve for x
    x = 28,699,541,178.12/189,449.70
  6. Step 6: Final answer
    x = 151,488.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.