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Finding the Fourth Proportional to 156,213.92, 215,574 and 84,593.72

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Solution

The fourth proportional to 156,213.92, 215,574 and 84,593.72 is: 116,738.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,213.92 : 215,574 = 84,593.72 : x
  2. Step 2: Convert to fraction form
    156,213.92/215,574 = 84,593.72/x
  3. Step 3: Cross multiply
    156,213.92x = 215,574 × 84,593.72
  4. Step 4: Simplify right side
    156,213.92x = 18,236,206,595.28
  5. Step 5: Solve for x
    x = 18,236,206,595.28/156,213.92
  6. Step 6: Final answer
    x = 116,738.68

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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.