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Finding the Fourth Proportional to 90,062.40, 135,093.60 and 82,804.80

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Solution

The fourth proportional to 90,062.40, 135,093.60 and 82,804.80 is: 124,207.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,062.40 : 135,093.60 = 82,804.80 : x
  2. Step 2: Convert to fraction form
    90,062.40/135,093.60 = 82,804.80/x
  3. Step 3: Cross multiply
    90,062.40x = 135,093.60 × 82,804.80
  4. Step 4: Simplify right side
    90,062.40x = 11,186,398,529.28
  5. Step 5: Solve for x
    x = 11,186,398,529.28/90,062.40
  6. Step 6: Final answer
    x = 124,207.20

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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.