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Finding the Fourth Proportional to 156,689.64, 216,234.24 and 88,704.84

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Solution

The fourth proportional to 156,689.64, 216,234.24 and 88,704.84 is: 122,414.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,689.64 : 216,234.24 = 88,704.84 : x
  2. Step 2: Convert to fraction form
    156,689.64/216,234.24 = 88,704.84/x
  3. Step 3: Cross multiply
    156,689.64x = 216,234.24 × 88,704.84
  4. Step 4: Simplify right side
    156,689.64x = 19,181,023,661.72
  5. Step 5: Solve for x
    x = 19,181,023,661.72/156,689.64
  6. Step 6: Final answer
    x = 122,414.12

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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.