Home / 155,396.37-214,465.97-87,416.21

Finding the Fourth Proportional to 155,396.37, 214,465.97 and 87,416.21

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Solution

The fourth proportional to 155,396.37, 214,465.97 and 87,416.21 is: 120,645.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,396.37 : 214,465.97 = 87,416.21 : x
  2. Step 2: Convert to fraction form
    155,396.37/214,465.97 = 87,416.21/x
  3. Step 3: Cross multiply
    155,396.37x = 214,465.97 × 87,416.21
  4. Step 4: Simplify right side
    155,396.37x = 18,747,800,761.96
  5. Step 5: Solve for x
    x = 18,747,800,761.96/155,396.37
  6. Step 6: Final answer
    x = 120,645.04

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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.