Home / 156,161.30-215,500.02-84,540.72

Finding the Fourth Proportional to 156,161.30, 215,500.02 and 84,540.72

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Solution

The fourth proportional to 156,161.30, 215,500.02 and 84,540.72 is: 116,664.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,161.30 : 215,500.02 = 84,540.72 : x
  2. Step 2: Convert to fraction form
    156,161.30/215,500.02 = 84,540.72/x
  3. Step 3: Cross multiply
    156,161.30x = 215,500.02 × 84,540.72
  4. Step 4: Simplify right side
    156,161.30x = 18,218,526,850.81
  5. Step 5: Solve for x
    x = 18,218,526,850.81/156,161.30
  6. Step 6: Final answer
    x = 116,664.80

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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.