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Finding the Fourth Proportional to 156,662.82, 216,198.60 and 85,042.84

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Solution

The fourth proportional to 156,662.82, 216,198.60 and 85,042.84 is: 117,361.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,662.82 : 216,198.60 = 85,042.84 : x
  2. Step 2: Convert to fraction form
    156,662.82/216,198.60 = 85,042.84/x
  3. Step 3: Cross multiply
    156,662.82x = 216,198.60 × 85,042.84
  4. Step 4: Simplify right side
    156,662.82x = 18,386,142,948.02
  5. Step 5: Solve for x
    x = 18,386,142,948.02/156,662.82
  6. Step 6: Final answer
    x = 117,361.24

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1.5x scale

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.