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Finding the Fourth Proportional to 156,446.72, 215,896.48 and 84,826.72

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Solution

The fourth proportional to 156,446.72, 215,896.48 and 84,826.72 is: 117,060.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,446.72 : 215,896.48 = 84,826.72 : x
  2. Step 2: Convert to fraction form
    156,446.72/215,896.48 = 84,826.72/x
  3. Step 3: Cross multiply
    156,446.72x = 215,896.48 × 84,826.72
  4. Step 4: Simplify right side
    156,446.72x = 18,313,790,315.75
  5. Step 5: Solve for x
    x = 18,313,790,315.75/156,446.72
  6. Step 6: Final answer
    x = 117,060.88

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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.