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Finding the Fourth Proportional to 143,364.66, 213,972.87 and 140,999.67

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Solution

The fourth proportional to 143,364.66, 213,972.87 and 140,999.67 is: 210,443.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,364.66 : 213,972.87 = 140,999.67 : x
  2. Step 2: Convert to fraction form
    143,364.66/213,972.87 = 140,999.67/x
  3. Step 3: Cross multiply
    143,364.66x = 213,972.87 × 140,999.67
  4. Step 4: Simplify right side
    143,364.66x = 30,170,104,058.95
  5. Step 5: Solve for x
    x = 30,170,104,058.95/143,364.66
  6. Step 6: Final answer
    x = 210,443.10

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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.