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Finding the Fourth Proportional to 143,273.70, 214,910.55 and 36,657.45

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Solution

The fourth proportional to 143,273.70, 214,910.55 and 36,657.45 is: 54,986.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,273.70 : 214,910.55 = 36,657.45 : x
  2. Step 2: Convert to fraction form
    143,273.70/214,910.55 = 36,657.45/x
  3. Step 3: Cross multiply
    143,273.70x = 214,910.55 × 36,657.45
  4. Step 4: Simplify right side
    143,273.70x = 7,878,072,741.10
  5. Step 5: Solve for x
    x = 7,878,072,741.10/143,273.70
  6. Step 6: Final answer
    x = 54,986.18

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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.