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Finding the Fourth Proportional to 134.56, 202.61 and 98.74

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Solution

The fourth proportional to 134.56, 202.61 and 98.74 is: 148.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.56 : 202.61 = 98.74 : x
  2. Step 2: Convert to fraction form
    134.56/202.61 = 98.74/x
  3. Step 3: Cross multiply
    134.56x = 202.61 × 98.74
  4. Step 4: Simplify right side
    134.56x = 20,005.71
  5. Step 5: Solve for x
    x = 20,005.71/134.56
  6. Step 6: Final answer
    x = 148.68

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These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.