Home / 156,078.12-215,388.18-84,458.91

Finding the Fourth Proportional to 156,078.12, 215,388.18 and 84,458.91

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Solution

The fourth proportional to 156,078.12, 215,388.18 and 84,458.91 is: 116,553.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,078.12 : 215,388.18 = 84,458.91 : x
  2. Step 2: Convert to fraction form
    156,078.12/215,388.18 = 84,458.91/x
  3. Step 3: Cross multiply
    156,078.12x = 215,388.18 × 84,458.91
  4. Step 4: Simplify right side
    156,078.12x = 18,191,450,909.68
  5. Step 5: Solve for x
    x = 18,191,450,909.68/156,078.12
  6. Step 6: Final answer
    x = 116,553.50

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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.