Home / 90,625.70-135,938.55-57,164.60

Finding the Fourth Proportional to 90,625.70, 135,938.55 and 57,164.60

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Solution

The fourth proportional to 90,625.70, 135,938.55 and 57,164.60 is: 85,746.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,625.70 : 135,938.55 = 57,164.60 : x
  2. Step 2: Convert to fraction form
    90,625.70/135,938.55 = 57,164.60/x
  3. Step 3: Cross multiply
    90,625.70x = 135,938.55 × 57,164.60
  4. Step 4: Simplify right side
    90,625.70x = 7,770,872,835.33
  5. Step 5: Solve for x
    x = 7,770,872,835.33/90,625.70
  6. Step 6: Final answer
    x = 85,746.90

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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.