Home / 102,168.12-140,992.68-56,848

Finding the Fourth Proportional to 102,168.12, 140,992.68 and 56,848

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Solution

The fourth proportional to 102,168.12, 140,992.68 and 56,848 is: 78,450.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,168.12 : 140,992.68 = 56,848 : x
  2. Step 2: Convert to fraction form
    102,168.12/140,992.68 = 56,848/x
  3. Step 3: Cross multiply
    102,168.12x = 140,992.68 × 56,848
  4. Step 4: Simplify right side
    102,168.12x = 8,015,151,872.64
  5. Step 5: Solve for x
    x = 8,015,151,872.64/102,168.12
  6. Step 6: Final answer
    x = 78,450.62

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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.