Home / 143,156.16-214,705.08-54,378.54

Finding the Fourth Proportional to 143,156.16, 214,705.08 and 54,378.54

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Solution

The fourth proportional to 143,156.16, 214,705.08 and 54,378.54 is: 81,556.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,156.16 : 214,705.08 = 54,378.54 : x
  2. Step 2: Convert to fraction form
    143,156.16/214,705.08 = 54,378.54/x
  3. Step 3: Cross multiply
    143,156.16x = 214,705.08 × 54,378.54
  4. Step 4: Simplify right side
    143,156.16x = 11,675,348,780.98
  5. Step 5: Solve for x
    x = 11,675,348,780.98/143,156.16
  6. Step 6: Final answer
    x = 81,556.73

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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.