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Finding the Fourth Proportional to 143,811.01, 215,716.52 and 43,971.21

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Solution

The fourth proportional to 143,811.01, 215,716.52 and 43,971.21 is: 65,956.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,811.01 : 215,716.52 = 43,971.21 : x
  2. Step 2: Convert to fraction form
    143,811.01/215,716.52 = 43,971.21/x
  3. Step 3: Cross multiply
    143,811.01x = 215,716.52 × 43,971.21
  4. Step 4: Simplify right side
    143,811.01x = 9,485,316,401.39
  5. Step 5: Solve for x
    x = 9,485,316,401.39/143,811.01
  6. Step 6: Final answer
    x = 65,956.82

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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.