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Finding the Fourth Proportional to 156,170.96, 215,515.62 and 84,550.97

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Solution

The fourth proportional to 156,170.96, 215,515.62 and 84,550.97 is: 116,680.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,170.96 : 215,515.62 = 84,550.97 : x
  2. Step 2: Convert to fraction form
    156,170.96/215,515.62 = 84,550.97/x
  3. Step 3: Cross multiply
    156,170.96x = 215,515.62 × 84,550.97
  4. Step 4: Simplify right side
    156,170.96x = 18,222,053,643.57
  5. Step 5: Solve for x
    x = 18,222,053,643.57/156,170.96
  6. Step 6: Final answer
    x = 116,680.17

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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.