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Finding the Fourth Proportional to 129.09, 194.00 and 88.77

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Solution

The fourth proportional to 129.09, 194.00 and 88.77 is: 133.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129.09 : 194.00 = 88.77 : x
  2. Step 2: Convert to fraction form
    129.09/194.00 = 88.77/x
  3. Step 3: Cross multiply
    129.09x = 194.00 × 88.77
  4. Step 4: Simplify right side
    129.09x = 17,220.94
  5. Step 5: Solve for x
    x = 17,220.94/129.09
  6. Step 6: Final answer
    x = 133.40

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.