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Finding the Fourth Proportional to 156,622.26, 216,138.63 and 88,638

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Solution

The fourth proportional to 156,622.26, 216,138.63 and 88,638 is: 122,320.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,622.26 : 216,138.63 = 88,638 : x
  2. Step 2: Convert to fraction form
    156,622.26/216,138.63 = 88,638/x
  3. Step 3: Cross multiply
    156,622.26x = 216,138.63 × 88,638
  4. Step 4: Simplify right side
    156,622.26x = 19,158,095,885.94
  5. Step 5: Solve for x
    x = 19,158,095,885.94/156,622.26
  6. Step 6: Final answer
    x = 122,320.39

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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.