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Finding the Fourth Proportional to 168,419.81, 232,413.53 and 100,401.68

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Solution

The fourth proportional to 168,419.81, 232,413.53 and 100,401.68 is: 138,550.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,419.81 : 232,413.53 = 100,401.68 : x
  2. Step 2: Convert to fraction form
    168,419.81/232,413.53 = 100,401.68/x
  3. Step 3: Cross multiply
    168,419.81x = 232,413.53 × 100,401.68
  4. Step 4: Simplify right side
    168,419.81x = 23,334,707,202.65
  5. Step 5: Solve for x
    x = 23,334,707,202.65/168,419.81
  6. Step 6: Final answer
    x = 138,550.85

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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.