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Finding the Fourth Proportional to 156,283.62, 215,672.45 and 84,663.68

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Solution

The fourth proportional to 156,283.62, 215,672.45 and 84,663.68 is: 116,836.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,283.62 : 215,672.45 = 84,663.68 : x
  2. Step 2: Convert to fraction form
    156,283.62/215,672.45 = 84,663.68/x
  3. Step 3: Cross multiply
    156,283.62x = 215,672.45 × 84,663.68
  4. Step 4: Simplify right side
    156,283.62x = 18,259,621,789.94
  5. Step 5: Solve for x
    x = 18,259,621,789.94/156,283.62
  6. Step 6: Final answer
    x = 116,836.44

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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.