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Finding the Fourth Proportional to 168,400.37, 232,389 and 91,920.98

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Solution

The fourth proportional to 168,400.37, 232,389 and 91,920.98 is: 126,849.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,400.37 : 232,389 = 91,920.98 : x
  2. Step 2: Convert to fraction form
    168,400.37/232,389 = 91,920.98/x
  3. Step 3: Cross multiply
    168,400.37x = 232,389 × 91,920.98
  4. Step 4: Simplify right side
    168,400.37x = 21,361,424,621.22
  5. Step 5: Solve for x
    x = 21,361,424,621.22/168,400.37
  6. Step 6: Final answer
    x = 126,849.04

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1.5x scale

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.