Home / 156,748.82-216,311.32-85,129.30

Finding the Fourth Proportional to 156,748.82, 216,311.32 and 85,129.30

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Solution

The fourth proportional to 156,748.82, 216,311.32 and 85,129.30 is: 117,477.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,748.82 : 216,311.32 = 85,129.30 : x
  2. Step 2: Convert to fraction form
    156,748.82/216,311.32 = 85,129.30/x
  3. Step 3: Cross multiply
    156,748.82x = 216,311.32 × 85,129.30
  4. Step 4: Simplify right side
    156,748.82x = 18,414,431,253.68
  5. Step 5: Solve for x
    x = 18,414,431,253.68/156,748.82
  6. Step 6: Final answer
    x = 117,477.32

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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.