Home / 155,399.67-214,431.37-87,414.35

Finding the Fourth Proportional to 155,399.67, 214,431.37 and 87,414.35

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Solution

The fourth proportional to 155,399.67, 214,431.37 and 87,414.35 is: 120,620.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,399.67 : 214,431.37 = 87,414.35 : x
  2. Step 2: Convert to fraction form
    155,399.67/214,431.37 = 87,414.35/x
  3. Step 3: Cross multiply
    155,399.67x = 214,431.37 × 87,414.35
  4. Step 4: Simplify right side
    155,399.67x = 18,744,377,318.93
  5. Step 5: Solve for x
    x = 18,744,377,318.93/155,399.67
  6. Step 6: Final answer
    x = 120,620.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.