Home / 159,579.08-220,138.20-121,787.72

Finding the Fourth Proportional to 159,579.08, 220,138.20 and 121,787.72

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Solution

The fourth proportional to 159,579.08, 220,138.20 and 121,787.72 is: 168,005.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,579.08 : 220,138.20 = 121,787.72 : x
  2. Step 2: Convert to fraction form
    159,579.08/220,138.20 = 121,787.72/x
  3. Step 3: Cross multiply
    159,579.08x = 220,138.20 × 121,787.72
  4. Step 4: Simplify right side
    159,579.08x = 26,810,129,462.90
  5. Step 5: Solve for x
    x = 26,810,129,462.90/159,579.08
  6. Step 6: Final answer
    x = 168,005.29

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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.