Home / 109,133.20-163,546.20-80,832.40

Finding the Fourth Proportional to 109,133.20, 163,546.20 and 80,832.40

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Solution

The fourth proportional to 109,133.20, 163,546.20 and 80,832.40 is: 121,134.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,133.20 : 163,546.20 = 80,832.40 : x
  2. Step 2: Convert to fraction form
    109,133.20/163,546.20 = 80,832.40/x
  3. Step 3: Cross multiply
    109,133.20x = 163,546.20 × 80,832.40
  4. Step 4: Simplify right side
    109,133.20x = 13,219,831,856.88
  5. Step 5: Solve for x
    x = 13,219,831,856.88/109,133.20
  6. Step 6: Final answer
    x = 121,134.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.