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Finding the Fourth Proportional to 156,452.49, 215,904.42 and 84,832.56

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Solution

The fourth proportional to 156,452.49, 215,904.42 and 84,832.56 is: 117,068.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,452.49 : 215,904.42 = 84,832.56 : x
  2. Step 2: Convert to fraction form
    156,452.49/215,904.42 = 84,832.56/x
  3. Step 3: Cross multiply
    156,452.49x = 215,904.42 × 84,832.56
  4. Step 4: Simplify right side
    156,452.49x = 18,315,724,663.92
  5. Step 5: Solve for x
    x = 18,315,724,663.92/156,452.49
  6. Step 6: Final answer
    x = 117,068.92

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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.