Home / 156,899.27-216,523.20-85,279.30

Finding the Fourth Proportional to 156,899.27, 216,523.20 and 85,279.30

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Solution

The fourth proportional to 156,899.27, 216,523.20 and 85,279.30 is: 117,686.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,899.27 : 216,523.20 = 85,279.30 : x
  2. Step 2: Convert to fraction form
    156,899.27/216,523.20 = 85,279.30/x
  3. Step 3: Cross multiply
    156,899.27x = 216,523.20 × 85,279.30
  4. Step 4: Simplify right side
    156,899.27x = 18,464,946,708.25
  5. Step 5: Solve for x
    x = 18,464,946,708.25/156,899.27
  6. Step 6: Final answer
    x = 117,686.63

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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.