Home / 139,977.39-193,169.93-76,315.65

Finding the Fourth Proportional to 139,977.39, 193,169.93 and 76,315.65

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Solution

The fourth proportional to 139,977.39, 193,169.93 and 76,315.65 is: 105,316.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,977.39 : 193,169.93 = 76,315.65 : x
  2. Step 2: Convert to fraction form
    139,977.39/193,169.93 = 76,315.65/x
  3. Step 3: Cross multiply
    139,977.39x = 193,169.93 × 76,315.65
  4. Step 4: Simplify right side
    139,977.39x = 14,741,888,768.40
  5. Step 5: Solve for x
    x = 14,741,888,768.40/139,977.39
  6. Step 6: Final answer
    x = 105,316.21

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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.