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Finding the Fourth Proportional to 156,634.66, 216,153.48 and 88,664.50

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Solution

The fourth proportional to 156,634.66, 216,153.48 and 88,664.50 is: 122,355.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,634.66 : 216,153.48 = 88,664.50 : x
  2. Step 2: Convert to fraction form
    156,634.66/216,153.48 = 88,664.50/x
  3. Step 3: Cross multiply
    156,634.66x = 216,153.48 × 88,664.50
  4. Step 4: Simplify right side
    156,634.66x = 19,165,140,227.46
  5. Step 5: Solve for x
    x = 19,165,140,227.46/156,634.66
  6. Step 6: Final answer
    x = 122,355.68

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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.