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Finding the Fourth Proportional to 156,873.21, 216,493.34 and 88,903.41

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Solution

The fourth proportional to 156,873.21, 216,493.34 and 88,903.41 is: 122,691.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,873.21 : 216,493.34 = 88,903.41 : x
  2. Step 2: Convert to fraction form
    156,873.21/216,493.34 = 88,903.41/x
  3. Step 3: Cross multiply
    156,873.21x = 216,493.34 × 88,903.41
  4. Step 4: Simplify right side
    156,873.21x = 19,246,995,723.77
  5. Step 5: Solve for x
    x = 19,246,995,723.77/156,873.21
  6. Step 6: Final answer
    x = 122,691.41

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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.