Home / 90,324.96-135,458.72-84,428.25

Finding the Fourth Proportional to 90,324.96, 135,458.72 and 84,428.25

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Solution

The fourth proportional to 90,324.96, 135,458.72 and 84,428.25 is: 126,615.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,324.96 : 135,458.72 = 84,428.25 : x
  2. Step 2: Convert to fraction form
    90,324.96/135,458.72 = 84,428.25/x
  3. Step 3: Cross multiply
    90,324.96x = 135,458.72 × 84,428.25
  4. Step 4: Simplify right side
    90,324.96x = 11,436,541,999.55
  5. Step 5: Solve for x
    x = 11,436,541,999.55/90,324.96
  6. Step 6: Final answer
    x = 126,615.53

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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.