Home / 159,579.07-220,216.39-87,965.75

Finding the Fourth Proportional to 159,579.07, 220,216.39 and 87,965.75

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Solution

The fourth proportional to 159,579.07, 220,216.39 and 87,965.75 is: 121,391.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,579.07 : 220,216.39 = 87,965.75 : x
  2. Step 2: Convert to fraction form
    159,579.07/220,216.39 = 87,965.75/x
  3. Step 3: Cross multiply
    159,579.07x = 220,216.39 × 87,965.75
  4. Step 4: Simplify right side
    159,579.07x = 19,371,500,239.27
  5. Step 5: Solve for x
    x = 19,371,500,239.27/159,579.07
  6. Step 6: Final answer
    x = 121,391.24

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1.5x scale

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.