Home / 140,409.88-193,766.95-79,979.65

Finding the Fourth Proportional to 140,409.88, 193,766.95 and 79,979.65

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Solution

The fourth proportional to 140,409.88, 193,766.95 and 79,979.65 is: 110,372.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,409.88 : 193,766.95 = 79,979.65 : x
  2. Step 2: Convert to fraction form
    140,409.88/193,766.95 = 79,979.65/x
  3. Step 3: Cross multiply
    140,409.88x = 193,766.95 × 79,979.65
  4. Step 4: Simplify right side
    140,409.88x = 15,497,413,210.65
  5. Step 5: Solve for x
    x = 15,497,413,210.65/140,409.88
  6. Step 6: Final answer
    x = 110,372.67

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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.