Home / 159,039.21-219,474.60-87,426.57

Finding the Fourth Proportional to 159,039.21, 219,474.60 and 87,426.57

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Solution

The fourth proportional to 159,039.21, 219,474.60 and 87,426.57 is: 120,648.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,039.21 : 219,474.60 = 87,426.57 : x
  2. Step 2: Convert to fraction form
    159,039.21/219,474.60 = 87,426.57/x
  3. Step 3: Cross multiply
    159,039.21x = 219,474.60 × 87,426.57
  4. Step 4: Simplify right side
    159,039.21x = 19,187,911,480.12
  5. Step 5: Solve for x
    x = 19,187,911,480.12/159,039.21
  6. Step 6: Final answer
    x = 120,648.94

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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.