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Finding the Fourth Proportional to 159,219.86, 219,723.81 and 87,604.34

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Solution

The fourth proportional to 159,219.86, 219,723.81 and 87,604.34 is: 120,894.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,219.86 : 219,723.81 = 87,604.34 : x
  2. Step 2: Convert to fraction form
    159,219.86/219,723.81 = 87,604.34/x
  3. Step 3: Cross multiply
    159,219.86x = 219,723.81 × 87,604.34
  4. Step 4: Simplify right side
    159,219.86x = 19,248,759,906.64
  5. Step 5: Solve for x
    x = 19,248,759,906.64/159,219.86
  6. Step 6: Final answer
    x = 120,894.21

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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.