Home / 155,388.68-214,434.24-87,400.52

Finding the Fourth Proportional to 155,388.68, 214,434.24 and 87,400.52

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Solution

The fourth proportional to 155,388.68, 214,434.24 and 87,400.52 is: 120,611.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,388.68 : 214,434.24 = 87,400.52 : x
  2. Step 2: Convert to fraction form
    155,388.68/214,434.24 = 87,400.52/x
  3. Step 3: Cross multiply
    155,388.68x = 214,434.24 × 87,400.52
  4. Step 4: Simplify right side
    155,388.68x = 18,741,664,081.80
  5. Step 5: Solve for x
    x = 18,741,664,081.80/155,388.68
  6. Step 6: Final answer
    x = 120,611.51

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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.