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Finding the Fourth Proportional to 130.32, 194.88 and 104.76

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Solution

The fourth proportional to 130.32, 194.88 and 104.76 is: 156.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    130.32 : 194.88 = 104.76 : x
  2. Step 2: Convert to fraction form
    130.32/194.88 = 104.76/x
  3. Step 3: Cross multiply
    130.32x = 194.88 × 104.76
  4. Step 4: Simplify right side
    130.32x = 20,415.63
  5. Step 5: Solve for x
    x = 20,415.63/130.32
  6. Step 6: Final answer
    x = 156.66

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Why These Related Problems?

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