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Finding the Fourth Proportional to 130.46, 194.76 and 103.13

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Solution

The fourth proportional to 130.46, 194.76 and 103.13 is: 153.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    130.46 : 194.76 = 103.13 : x
  2. Step 2: Convert to fraction form
    130.46/194.76 = 103.13/x
  3. Step 3: Cross multiply
    130.46x = 194.76 × 103.13
  4. Step 4: Simplify right side
    130.46x = 20,085.08
  5. Step 5: Solve for x
    x = 20,085.08/130.46
  6. Step 6: Final answer
    x = 153.96

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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.