Home / 159,035.89-219,381.45-100,785.95

Finding the Fourth Proportional to 159,035.89, 219,381.45 and 100,785.95

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Solution

The fourth proportional to 159,035.89, 219,381.45 and 100,785.95 is: 139,028.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,035.89 : 219,381.45 = 100,785.95 : x
  2. Step 2: Convert to fraction form
    159,035.89/219,381.45 = 100,785.95/x
  3. Step 3: Cross multiply
    159,035.89x = 219,381.45 × 100,785.95
  4. Step 4: Simplify right side
    159,035.89x = 22,110,567,850.63
  5. Step 5: Solve for x
    x = 22,110,567,850.63/159,035.89
  6. Step 6: Final answer
    x = 139,028.79

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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.