Home / 156,319.37-215,756.14-88,375.65

Finding the Fourth Proportional to 156,319.37, 215,756.14 and 88,375.65

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Solution

The fourth proportional to 156,319.37, 215,756.14 and 88,375.65 is: 121,978.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,319.37 : 215,756.14 = 88,375.65 : x
  2. Step 2: Convert to fraction form
    156,319.37/215,756.14 = 88,375.65/x
  3. Step 3: Cross multiply
    156,319.37x = 215,756.14 × 88,375.65
  4. Step 4: Simplify right side
    156,319.37x = 19,067,589,113.99
  5. Step 5: Solve for x
    x = 19,067,589,113.99/156,319.37
  6. Step 6: Final answer
    x = 121,978.42

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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.