Home / 90,739.44-135,588.60-69,273.36

Finding the Fourth Proportional to 90,739.44, 135,588.60 and 69,273.36

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Solution

The fourth proportional to 90,739.44, 135,588.60 and 69,273.36 is: 103,512.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,739.44 : 135,588.60 = 69,273.36 : x
  2. Step 2: Convert to fraction form
    90,739.44/135,588.60 = 69,273.36/x
  3. Step 3: Cross multiply
    90,739.44x = 135,588.60 × 69,273.36
  4. Step 4: Simplify right side
    90,739.44x = 9,392,677,899.70
  5. Step 5: Solve for x
    x = 9,392,677,899.70/90,739.44
  6. Step 6: Final answer
    x = 103,512.63

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.