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Finding the Fourth Proportional to 143,059.74, 197,413.11 and 79,394.46

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Solution

The fourth proportional to 143,059.74, 197,413.11 and 79,394.46 is: 109,559.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,059.74 : 197,413.11 = 79,394.46 : x
  2. Step 2: Convert to fraction form
    143,059.74/197,413.11 = 79,394.46/x
  3. Step 3: Cross multiply
    143,059.74x = 197,413.11 × 79,394.46
  4. Step 4: Simplify right side
    143,059.74x = 15,673,507,265.37
  5. Step 5: Solve for x
    x = 15,673,507,265.37/143,059.74
  6. Step 6: Final answer
    x = 109,559.18

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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.