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Finding the Fourth Proportional to 156,104.40, 215,424.63 and 84,484.41

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Solution

The fourth proportional to 156,104.40, 215,424.63 and 84,484.41 is: 116,588.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,104.40 : 215,424.63 = 84,484.41 : x
  2. Step 2: Convert to fraction form
    156,104.40/215,424.63 = 84,484.41/x
  3. Step 3: Cross multiply
    156,104.40x = 215,424.63 × 84,484.41
  4. Step 4: Simplify right side
    156,104.40x = 18,200,022,765.02
  5. Step 5: Solve for x
    x = 18,200,022,765.02/156,104.40
  6. Step 6: Final answer
    x = 116,588.79

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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.