Home / 159,712.89-220,201.43-105,256.59

Finding the Fourth Proportional to 159,712.89, 220,201.43 and 105,256.59

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Solution

The fourth proportional to 159,712.89, 220,201.43 and 105,256.59 is: 145,120.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,712.89 : 220,201.43 = 105,256.59 : x
  2. Step 2: Convert to fraction form
    159,712.89/220,201.43 = 105,256.59/x
  3. Step 3: Cross multiply
    159,712.89x = 220,201.43 × 105,256.59
  4. Step 4: Simplify right side
    159,712.89x = 23,177,650,533.92
  5. Step 5: Solve for x
    x = 23,177,650,533.92/159,712.89
  6. Step 6: Final answer
    x = 145,120.73

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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.