Home / 155,288.88-214,313.31-87,322.86

Finding the Fourth Proportional to 155,288.88, 214,313.31 and 87,322.86

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Solution

The fourth proportional to 155,288.88, 214,313.31 and 87,322.86 is: 120,513.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,288.88 : 214,313.31 = 87,322.86 : x
  2. Step 2: Convert to fraction form
    155,288.88/214,313.31 = 87,322.86/x
  3. Step 3: Cross multiply
    155,288.88x = 214,313.31 × 87,322.86
  4. Step 4: Simplify right side
    155,288.88x = 18,714,451,165.27
  5. Step 5: Solve for x
    x = 18,714,451,165.27/155,288.88
  6. Step 6: Final answer
    x = 120,513.79

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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.