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Finding the Fourth Proportional to 156,160.32, 215,501.32 and 84,540.34

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Solution

The fourth proportional to 156,160.32, 215,501.32 and 84,540.34 is: 116,665.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,160.32 : 215,501.32 = 84,540.34 : x
  2. Step 2: Convert to fraction form
    156,160.32/215,501.32 = 84,540.34/x
  3. Step 3: Cross multiply
    156,160.32x = 215,501.32 × 84,540.34
  4. Step 4: Simplify right side
    156,160.32x = 18,218,554,863.25
  5. Step 5: Solve for x
    x = 18,218,554,863.25/156,160.32
  6. Step 6: Final answer
    x = 116,665.71

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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.