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Finding the Fourth Proportional to 156,212.96, 215,574 and 84,593.06

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Solution

The fourth proportional to 156,212.96, 215,574 and 84,593.06 is: 116,738.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,212.96 : 215,574 = 84,593.06 : x
  2. Step 2: Convert to fraction form
    156,212.96/215,574 = 84,593.06/x
  3. Step 3: Cross multiply
    156,212.96x = 215,574 × 84,593.06
  4. Step 4: Simplify right side
    156,212.96x = 18,236,064,316.44
  5. Step 5: Solve for x
    x = 18,236,064,316.44/156,212.96
  6. Step 6: Final answer
    x = 116,738.49

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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.