Home / 90,843.20-136,495.20-80,705.60

Finding the Fourth Proportional to 90,843.20, 136,495.20 and 80,705.60

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Solution

The fourth proportional to 90,843.20, 136,495.20 and 80,705.60 is: 121,263.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,843.20 : 136,495.20 = 80,705.60 : x
  2. Step 2: Convert to fraction form
    90,843.20/136,495.20 = 80,705.60/x
  3. Step 3: Cross multiply
    90,843.20x = 136,495.20 × 80,705.60
  4. Step 4: Simplify right side
    90,843.20x = 11,015,927,013.12
  5. Step 5: Solve for x
    x = 11,015,927,013.12/90,843.20
  6. Step 6: Final answer
    x = 121,263.09

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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.