Home / 156,899.73-216,520.34-85,279.53

Finding the Fourth Proportional to 156,899.73, 216,520.34 and 85,279.53

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Solution

The fourth proportional to 156,899.73, 216,520.34 and 85,279.53 is: 117,685.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,899.73 : 216,520.34 = 85,279.53 : x
  2. Step 2: Convert to fraction form
    156,899.73/216,520.34 = 85,279.53/x
  3. Step 3: Cross multiply
    156,899.73x = 216,520.34 × 85,279.53
  4. Step 4: Simplify right side
    156,899.73x = 18,464,753,695.89
  5. Step 5: Solve for x
    x = 18,464,753,695.89/156,899.73
  6. Step 6: Final answer
    x = 117,685.05

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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.