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Finding the Fourth Proportional to 143.48, 214.18 and 125.26

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Solution

The fourth proportional to 143.48, 214.18 and 125.26 is: 186.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    143.48 : 214.18 = 125.26 : x
  2. Step 2: Convert to fraction form
    143.48/214.18 = 125.26/x
  3. Step 3: Cross multiply
    143.48x = 214.18 × 125.26
  4. Step 4: Simplify right side
    143.48x = 26,828.19
  5. Step 5: Solve for x
    x = 26,828.19/143.48
  6. Step 6: Final answer
    x = 186.98

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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.