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Finding the Fourth Proportional to 156,200.57, 215,556.48 and 84,580.80

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Solution

The fourth proportional to 156,200.57, 215,556.48 and 84,580.80 is: 116,721.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,200.57 : 215,556.48 = 84,580.80 : x
  2. Step 2: Convert to fraction form
    156,200.57/215,556.48 = 84,580.80/x
  3. Step 3: Cross multiply
    156,200.57x = 215,556.48 × 84,580.80
  4. Step 4: Simplify right side
    156,200.57x = 18,231,939,523.58
  5. Step 5: Solve for x
    x = 18,231,939,523.58/156,200.57
  6. Step 6: Final answer
    x = 116,721.34

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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.