Home / 89,027.60-133,541.40-80,279.60

Finding the Fourth Proportional to 89,027.60, 133,541.40 and 80,279.60

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Solution

The fourth proportional to 89,027.60, 133,541.40 and 80,279.60 is: 120,419.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,027.60 : 133,541.40 = 80,279.60 : x
  2. Step 2: Convert to fraction form
    89,027.60/133,541.40 = 80,279.60/x
  3. Step 3: Cross multiply
    89,027.60x = 133,541.40 × 80,279.60
  4. Step 4: Simplify right side
    89,027.60x = 10,720,650,175.44
  5. Step 5: Solve for x
    x = 10,720,650,175.44/89,027.60
  6. Step 6: Final answer
    x = 120,419.40

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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.