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Finding the Fourth Proportional to 168,975.23, 233,169.99 and 100,978.67

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Solution

The fourth proportional to 168,975.23, 233,169.99 and 100,978.67 is: 139,341.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,975.23 : 233,169.99 = 100,978.67 : x
  2. Step 2: Convert to fraction form
    168,975.23/233,169.99 = 100,978.67/x
  3. Step 3: Cross multiply
    168,975.23x = 233,169.99 × 100,978.67
  4. Step 4: Simplify right side
    168,975.23x = 23,545,195,474.11
  5. Step 5: Solve for x
    x = 23,545,195,474.11/168,975.23
  6. Step 6: Final answer
    x = 139,341.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.