Home / 156,243.70-215,556.85-115,505.65

Finding the Fourth Proportional to 156,243.70, 215,556.85 and 115,505.65

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Solution

The fourth proportional to 156,243.70, 215,556.85 and 115,505.65 is: 159,353.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,243.70 : 215,556.85 = 115,505.65 : x
  2. Step 2: Convert to fraction form
    156,243.70/215,556.85 = 115,505.65/x
  3. Step 3: Cross multiply
    156,243.70x = 215,556.85 × 115,505.65
  4. Step 4: Simplify right side
    156,243.70x = 24,898,033,243.55
  5. Step 5: Solve for x
    x = 24,898,033,243.55/156,243.70
  6. Step 6: Final answer
    x = 159,353.84

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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.