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Finding the Fourth Proportional to 139,596.62, 192,653.37 and 79,172.51

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Solution

The fourth proportional to 139,596.62, 192,653.37 and 79,172.51 is: 109,263.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,596.62 : 192,653.37 = 79,172.51 : x
  2. Step 2: Convert to fraction form
    139,596.62/192,653.37 = 79,172.51/x
  3. Step 3: Cross multiply
    139,596.62x = 192,653.37 × 79,172.51
  4. Step 4: Simplify right side
    139,596.62x = 15,252,849,899.59
  5. Step 5: Solve for x
    x = 15,252,849,899.59/139,596.62
  6. Step 6: Final answer
    x = 109,263.75

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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.