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Finding the Fourth Proportional to 168,871.23, 253,301.99 and 42,511.23

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Solution

The fourth proportional to 168,871.23, 253,301.99 and 42,511.23 is: 63,765.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,871.23 : 253,301.99 = 42,511.23 : x
  2. Step 2: Convert to fraction form
    168,871.23/253,301.99 = 42,511.23/x
  3. Step 3: Cross multiply
    168,871.23x = 253,301.99 × 42,511.23
  4. Step 4: Simplify right side
    168,871.23x = 10,768,178,943.79
  5. Step 5: Solve for x
    x = 10,768,178,943.79/168,871.23
  6. Step 6: Final answer
    x = 63,765.62

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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.