Home / 156,138.63-215,471.25-84,519.24

Finding the Fourth Proportional to 156,138.63, 215,471.25 and 84,519.24

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Solution

The fourth proportional to 156,138.63, 215,471.25 and 84,519.24 is: 116,636.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,138.63 : 215,471.25 = 84,519.24 : x
  2. Step 2: Convert to fraction form
    156,138.63/215,471.25 = 84,519.24/x
  3. Step 3: Cross multiply
    156,138.63x = 215,471.25 × 84,519.24
  4. Step 4: Simplify right side
    156,138.63x = 18,211,466,291.85
  5. Step 5: Solve for x
    x = 18,211,466,291.85/156,138.63
  6. Step 6: Final answer
    x = 116,636.52

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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.