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Finding the Fourth Proportional to 139,950.92, 193,124.94 and 79,513.16

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Solution

The fourth proportional to 139,950.92, 193,124.94 and 79,513.16 is: 109,724.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,950.92 : 193,124.94 = 79,513.16 : x
  2. Step 2: Convert to fraction form
    139,950.92/193,124.94 = 79,513.16/x
  3. Step 3: Cross multiply
    139,950.92x = 193,124.94 × 79,513.16
  4. Step 4: Simplify right side
    139,950.92x = 15,355,974,254.21
  5. Step 5: Solve for x
    x = 15,355,974,254.21/139,950.92
  6. Step 6: Final answer
    x = 109,724.00

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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.