Home / 156,201.12-215,558.55-84,581.74

Finding the Fourth Proportional to 156,201.12, 215,558.55 and 84,581.74

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Solution

The fourth proportional to 156,201.12, 215,558.55 and 84,581.74 is: 116,723.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,201.12 : 215,558.55 = 84,581.74 : x
  2. Step 2: Convert to fraction form
    156,201.12/215,558.55 = 84,581.74/x
  3. Step 3: Cross multiply
    156,201.12x = 215,558.55 × 84,581.74
  4. Step 4: Simplify right side
    156,201.12x = 18,232,317,230.88
  5. Step 5: Solve for x
    x = 18,232,317,230.88/156,201.12
  6. Step 6: Final answer
    x = 116,723.35

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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.