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Finding the Fourth Proportional to 156,486.05, 215,961.46 and 88,503.04

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Solution

The fourth proportional to 156,486.05, 215,961.46 and 88,503.04 is: 122,140.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,486.05 : 215,961.46 = 88,503.04 : x
  2. Step 2: Convert to fraction form
    156,486.05/215,961.46 = 88,503.04/x
  3. Step 3: Cross multiply
    156,486.05x = 215,961.46 × 88,503.04
  4. Step 4: Simplify right side
    156,486.05x = 19,113,245,732.84
  5. Step 5: Solve for x
    x = 19,113,245,732.84/156,486.05
  6. Step 6: Final answer
    x = 122,140.25

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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.