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Finding the Fourth Proportional to 156,100.57, 215,418.77 and 84,480.60

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Solution

The fourth proportional to 156,100.57, 215,418.77 and 84,480.60 is: 116,583.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,100.57 : 215,418.77 = 84,480.60 : x
  2. Step 2: Convert to fraction form
    156,100.57/215,418.77 = 84,480.60/x
  3. Step 3: Cross multiply
    156,100.57x = 215,418.77 × 84,480.60
  4. Step 4: Simplify right side
    156,100.57x = 18,198,707,643.08
  5. Step 5: Solve for x
    x = 18,198,707,643.08/156,100.57
  6. Step 6: Final answer
    x = 116,583.23

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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.