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Finding the Fourth Proportional to 139,922.93, 193,098.81 and 79,503.81

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Solution

The fourth proportional to 139,922.93, 193,098.81 and 79,503.81 is: 109,718.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,922.93 : 193,098.81 = 79,503.81 : x
  2. Step 2: Convert to fraction form
    139,922.93/193,098.81 = 79,503.81/x
  3. Step 3: Cross multiply
    139,922.93x = 193,098.81 × 79,503.81
  4. Step 4: Simplify right side
    139,922.93x = 15,352,090,388.02
  5. Step 5: Solve for x
    x = 15,352,090,388.02/139,922.93
  6. Step 6: Final answer
    x = 109,718.19

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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.