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Finding the Fourth Proportional to 143,782.80, 214,609.68 and 134,918.16

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Solution

The fourth proportional to 143,782.80, 214,609.68 and 134,918.16 is: 201,378.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,782.80 : 214,609.68 = 134,918.16 : x
  2. Step 2: Convert to fraction form
    143,782.80/214,609.68 = 134,918.16/x
  3. Step 3: Cross multiply
    143,782.80x = 214,609.68 × 134,918.16
  4. Step 4: Simplify right side
    143,782.80x = 28,954,743,143.79
  5. Step 5: Solve for x
    x = 28,954,743,143.79/143,782.80
  6. Step 6: Final answer
    x = 201,378.35

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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.