Home / 155,163.72-214,138.38-90,653.70

Finding the Fourth Proportional to 155,163.72, 214,138.38 and 90,653.70

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Solution

The fourth proportional to 155,163.72, 214,138.38 and 90,653.70 is: 125,109.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,163.72 : 214,138.38 = 90,653.70 : x
  2. Step 2: Convert to fraction form
    155,163.72/214,138.38 = 90,653.70/x
  3. Step 3: Cross multiply
    155,163.72x = 214,138.38 × 90,653.70
  4. Step 4: Simplify right side
    155,163.72x = 19,412,436,459.01
  5. Step 5: Solve for x
    x = 19,412,436,459.01/155,163.72
  6. Step 6: Final answer
    x = 125,109.38

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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.