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Finding the Fourth Proportional to 129.55, 193.34 and 116.59

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Solution

The fourth proportional to 129.55, 193.34 and 116.59 is: 174.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    129.55 : 193.34 = 116.59 : x
  2. Step 2: Convert to fraction form
    129.55/193.34 = 116.59/x
  3. Step 3: Cross multiply
    129.55x = 193.34 × 116.59
  4. Step 4: Simplify right side
    129.55x = 22,541.03
  5. Step 5: Solve for x
    x = 22,541.03/129.55
  6. Step 6: Final answer
    x = 174.00

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.