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Finding the Fourth Proportional to 121,297.23, 181,978.79 and 68,743.62

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Solution

The fourth proportional to 121,297.23, 181,978.79 and 68,743.62 is: 103,134.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,297.23 : 181,978.79 = 68,743.62 : x
  2. Step 2: Convert to fraction form
    121,297.23/181,978.79 = 68,743.62/x
  3. Step 3: Cross multiply
    121,297.23x = 181,978.79 × 68,743.62
  4. Step 4: Simplify right side
    121,297.23x = 12,509,880,444.10
  5. Step 5: Solve for x
    x = 12,509,880,444.10/121,297.23
  6. Step 6: Final answer
    x = 103,134.10

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.