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Finding the Fourth Proportional to 137,122.20, 205,698.42 and 43,606.08

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Solution

The fourth proportional to 137,122.20, 205,698.42 and 43,606.08 is: 65,413.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,122.20 : 205,698.42 = 43,606.08 : x
  2. Step 2: Convert to fraction form
    137,122.20/205,698.42 = 43,606.08/x
  3. Step 3: Cross multiply
    137,122.20x = 205,698.42 × 43,606.08
  4. Step 4: Simplify right side
    137,122.20x = 8,969,701,758.39
  5. Step 5: Solve for x
    x = 8,969,701,758.39/137,122.20
  6. Step 6: Final answer
    x = 65,413.93

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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.