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Finding the Fourth Proportional to 143,291.87, 214,734.11 and 105,555.18

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Solution

The fourth proportional to 143,291.87, 214,734.11 and 105,555.18 is: 158,182.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,291.87 : 214,734.11 = 105,555.18 : x
  2. Step 2: Convert to fraction form
    143,291.87/214,734.11 = 105,555.18/x
  3. Step 3: Cross multiply
    143,291.87x = 214,734.11 × 105,555.18
  4. Step 4: Simplify right side
    143,291.87x = 22,666,297,897.08
  5. Step 5: Solve for x
    x = 22,666,297,897.08/143,291.87
  6. Step 6: Final answer
    x = 158,182.73

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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.