Home / 155,375.19-214,415.64-87,392.15

Finding the Fourth Proportional to 155,375.19, 214,415.64 and 87,392.15

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Solution

The fourth proportional to 155,375.19, 214,415.64 and 87,392.15 is: 120,599.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,375.19 : 214,415.64 = 87,392.15 : x
  2. Step 2: Convert to fraction form
    155,375.19/214,415.64 = 87,392.15/x
  3. Step 3: Cross multiply
    155,375.19x = 214,415.64 × 87,392.15
  4. Step 4: Simplify right side
    155,375.19x = 18,738,243,505.21
  5. Step 5: Solve for x
    x = 18,738,243,505.21/155,375.19
  6. Step 6: Final answer
    x = 120,599.97

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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.