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Finding the Fourth Proportional to 143,399.88, 214,803.90 and 84,055.32

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Solution

The fourth proportional to 143,399.88, 214,803.90 and 84,055.32 is: 125,909.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,399.88 : 214,803.90 = 84,055.32 : x
  2. Step 2: Convert to fraction form
    143,399.88/214,803.90 = 84,055.32/x
  3. Step 3: Cross multiply
    143,399.88x = 214,803.90 × 84,055.32
  4. Step 4: Simplify right side
    143,399.88x = 18,055,410,551.75
  5. Step 5: Solve for x
    x = 18,055,410,551.75/143,399.88
  6. Step 6: Final answer
    x = 125,909.52

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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.