Home / 159,100.07-219,558.05-87,484.73

Finding the Fourth Proportional to 159,100.07, 219,558.05 and 87,484.73

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Solution

The fourth proportional to 159,100.07, 219,558.05 and 87,484.73 is: 120,728.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,100.07 : 219,558.05 = 87,484.73 : x
  2. Step 2: Convert to fraction form
    159,100.07/219,558.05 = 87,484.73/x
  3. Step 3: Cross multiply
    159,100.07x = 219,558.05 × 87,484.73
  4. Step 4: Simplify right side
    159,100.07x = 19,207,976,723.58
  5. Step 5: Solve for x
    x = 19,207,976,723.58/159,100.07
  6. Step 6: Final answer
    x = 120,728.90

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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.