Home / 156,391.43-215,814.40-84,769.92

Finding the Fourth Proportional to 156,391.43, 215,814.40 and 84,769.92

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Solution

The fourth proportional to 156,391.43, 215,814.40 and 84,769.92 is: 116,979.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,391.43 : 215,814.40 = 84,769.92 : x
  2. Step 2: Convert to fraction form
    156,391.43/215,814.40 = 84,769.92/x
  3. Step 3: Cross multiply
    156,391.43x = 215,814.40 × 84,769.92
  4. Step 4: Simplify right side
    156,391.43x = 18,294,568,788.23
  5. Step 5: Solve for x
    x = 18,294,568,788.23/156,391.43
  6. Step 6: Final answer
    x = 116,979.35

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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.