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Finding the Fourth Proportional to 139,950.77, 193,124.79 and 79,513.02

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Solution

The fourth proportional to 139,950.77, 193,124.79 and 79,513.02 is: 109,723.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,950.77 : 193,124.79 = 79,513.02 : x
  2. Step 2: Convert to fraction form
    139,950.77/193,124.79 = 79,513.02/x
  3. Step 3: Cross multiply
    139,950.77x = 193,124.79 × 79,513.02
  4. Step 4: Simplify right side
    139,950.77x = 15,355,935,289.77
  5. Step 5: Solve for x
    x = 15,355,935,289.77/139,950.77
  6. Step 6: Final answer
    x = 109,723.84

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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.