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Finding the Fourth Proportional to 145.34, 199.56 and 124.61

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Solution

The fourth proportional to 145.34, 199.56 and 124.61 is: 171.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    145.34 : 199.56 = 124.61 : x
  2. Step 2: Convert to fraction form
    145.34/199.56 = 124.61/x
  3. Step 3: Cross multiply
    145.34x = 199.56 × 124.61
  4. Step 4: Simplify right side
    145.34x = 24,868.32
  5. Step 5: Solve for x
    x = 24,868.32/145.34
  6. Step 6: Final answer
    x = 171.10

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.