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Finding the Fourth Proportional to 156,274.91, 215,659.36 and 84,654.91

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Solution

The fourth proportional to 156,274.91, 215,659.36 and 84,654.91 is: 116,823.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,274.91 : 215,659.36 = 84,654.91 : x
  2. Step 2: Convert to fraction form
    156,274.91/215,659.36 = 84,654.91/x
  3. Step 3: Cross multiply
    156,274.91x = 215,659.36 × 84,654.91
  4. Step 4: Simplify right side
    156,274.91x = 18,256,623,711.46
  5. Step 5: Solve for x
    x = 18,256,623,711.46/156,274.91
  6. Step 6: Final answer
    x = 116,823.77

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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.