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Finding the Fourth Proportional to 156,291.58, 215,682.12 and 84,673.42

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Solution

The fourth proportional to 156,291.58, 215,682.12 and 84,673.42 is: 116,849.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,291.58 : 215,682.12 = 84,673.42 : x
  2. Step 2: Convert to fraction form
    156,291.58/215,682.12 = 84,673.42/x
  3. Step 3: Cross multiply
    156,291.58x = 215,682.12 × 84,673.42
  4. Step 4: Simplify right side
    156,291.58x = 18,262,542,733.25
  5. Step 5: Solve for x
    x = 18,262,542,733.25/156,291.58
  6. Step 6: Final answer
    x = 116,849.18

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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.