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Finding the Fourth Proportional to 156,442.89, 215,889.88 and 88,473.21

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Solution

The fourth proportional to 156,442.89, 215,889.88 and 88,473.21 is: 122,092.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,442.89 : 215,889.88 = 88,473.21 : x
  2. Step 2: Convert to fraction form
    156,442.89/215,889.88 = 88,473.21/x
  3. Step 3: Cross multiply
    156,442.89x = 215,889.88 × 88,473.21
  4. Step 4: Simplify right side
    156,442.89x = 19,100,470,690.11
  5. Step 5: Solve for x
    x = 19,100,470,690.11/156,442.89
  6. Step 6: Final answer
    x = 122,092.29

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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.