Home / 156,994.18-216,653.51-85,375.75

Finding the Fourth Proportional to 156,994.18, 216,653.51 and 85,375.75

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Solution

The fourth proportional to 156,994.18, 216,653.51 and 85,375.75 is: 117,819.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,994.18 : 216,653.51 = 85,375.75 : x
  2. Step 2: Convert to fraction form
    156,994.18/216,653.51 = 85,375.75/x
  3. Step 3: Cross multiply
    156,994.18x = 216,653.51 × 85,375.75
  4. Step 4: Simplify right side
    156,994.18x = 18,496,955,906.38
  5. Step 5: Solve for x
    x = 18,496,955,906.38/156,994.18
  6. Step 6: Final answer
    x = 117,819.37

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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.