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Finding the Fourth Proportional to 156,160.14, 215,500.74 and 84,540.14

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Solution

The fourth proportional to 156,160.14, 215,500.74 and 84,540.14 is: 116,665.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,160.14 : 215,500.74 = 84,540.14 : x
  2. Step 2: Convert to fraction form
    156,160.14/215,500.74 = 84,540.14/x
  3. Step 3: Cross multiply
    156,160.14x = 215,500.74 × 84,540.14
  4. Step 4: Simplify right side
    156,160.14x = 18,218,462,729.70
  5. Step 5: Solve for x
    x = 18,218,462,729.70/156,160.14
  6. Step 6: Final answer
    x = 116,665.26

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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.