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Finding the Fourth Proportional to 156,004.68, 215,286.21 and 84,384.48

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Solution

The fourth proportional to 156,004.68, 215,286.21 and 84,384.48 is: 116,450.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,004.68 : 215,286.21 = 84,384.48 : x
  2. Step 2: Convert to fraction form
    156,004.68/215,286.21 = 84,384.48/x
  3. Step 3: Cross multiply
    156,004.68x = 215,286.21 × 84,384.48
  4. Step 4: Simplify right side
    156,004.68x = 18,166,814,882.02
  5. Step 5: Solve for x
    x = 18,166,814,882.02/156,004.68
  6. Step 6: Final answer
    x = 116,450.45

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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.