Home / 156,231.22-215,583.66-87,307.96

Finding the Fourth Proportional to 156,231.22, 215,583.66 and 87,307.96

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Solution

The fourth proportional to 156,231.22, 215,583.66 and 87,307.96 is: 120,476.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,231.22 : 215,583.66 = 87,307.96 : x
  2. Step 2: Convert to fraction form
    156,231.22/215,583.66 = 87,307.96/x
  3. Step 3: Cross multiply
    156,231.22x = 215,583.66 × 87,307.96
  4. Step 4: Simplify right side
    156,231.22x = 18,822,169,563.93
  5. Step 5: Solve for x
    x = 18,822,169,563.93/156,231.22
  6. Step 6: Final answer
    x = 120,476.37

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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.