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Finding the Fourth Proportional to 156,635.73, 216,157.53 and 85,015.73

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Solution

The fourth proportional to 156,635.73, 216,157.53 and 85,015.73 is: 117,321.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,635.73 : 216,157.53 = 85,015.73 : x
  2. Step 2: Convert to fraction form
    156,635.73/216,157.53 = 85,015.73/x
  3. Step 3: Cross multiply
    156,635.73x = 216,157.53 × 85,015.73
  4. Step 4: Simplify right side
    156,635.73x = 18,376,789,127.16
  5. Step 5: Solve for x
    x = 18,376,789,127.16/156,635.73
  6. Step 6: Final answer
    x = 117,321.82

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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.