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Finding the Fourth Proportional to 145.74, 200.91 and 124.92

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Solution

The fourth proportional to 145.74, 200.91 and 124.92 is: 172.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    145.74 : 200.91 = 124.92 : x
  2. Step 2: Convert to fraction form
    145.74/200.91 = 124.92/x
  3. Step 3: Cross multiply
    145.74x = 200.91 × 124.92
  4. Step 4: Simplify right side
    145.74x = 25,097.68
  5. Step 5: Solve for x
    x = 25,097.68/145.74
  6. Step 6: Final answer
    x = 172.21

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.