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Finding the Fourth Proportional to 143,149.80, 214,724.70 and 141,837.60

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Solution

The fourth proportional to 143,149.80, 214,724.70 and 141,837.60 is: 212,756.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,149.80 : 214,724.70 = 141,837.60 : x
  2. Step 2: Convert to fraction form
    143,149.80/214,724.70 = 141,837.60/x
  3. Step 3: Cross multiply
    143,149.80x = 214,724.70 × 141,837.60
  4. Step 4: Simplify right side
    143,149.80x = 30,456,036,108.72
  5. Step 5: Solve for x
    x = 30,456,036,108.72/143,149.80
  6. Step 6: Final answer
    x = 212,756.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.