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Finding the Fourth Proportional to 143,111, 214,666.50 and 44,615

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Solution

The fourth proportional to 143,111, 214,666.50 and 44,615 is: 66,922.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,111 : 214,666.50 = 44,615 : x
  2. Step 2: Convert to fraction form
    143,111/214,666.50 = 44,615/x
  3. Step 3: Cross multiply
    143,111x = 214,666.50 × 44,615
  4. Step 4: Simplify right side
    143,111x = 9,577,345,897.50
  5. Step 5: Solve for x
    x = 9,577,345,897.50/143,111
  6. Step 6: Final answer
    x = 66,922.50

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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.