Home / 139,653.26-192,688.68-79,209.98

Finding the Fourth Proportional to 139,653.26, 192,688.68 and 79,209.98

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Solution

The fourth proportional to 139,653.26, 192,688.68 and 79,209.98 is: 109,291.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,653.26 : 192,688.68 = 79,209.98 : x
  2. Step 2: Convert to fraction form
    139,653.26/192,688.68 = 79,209.98/x
  3. Step 3: Cross multiply
    139,653.26x = 192,688.68 × 79,209.98
  4. Step 4: Simplify right side
    139,653.26x = 15,262,866,489.03
  5. Step 5: Solve for x
    x = 15,262,866,489.03/139,653.26
  6. Step 6: Final answer
    x = 109,291.16

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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.