Home / 79,200.09-118,504.87-78,314.35

Finding the Fourth Proportional to 79,200.09, 118,504.87 and 78,314.35

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Solution

The fourth proportional to 79,200.09, 118,504.87 and 78,314.35 is: 117,179.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,200.09 : 118,504.87 = 78,314.35 : x
  2. Step 2: Convert to fraction form
    79,200.09/118,504.87 = 78,314.35/x
  3. Step 3: Cross multiply
    79,200.09x = 118,504.87 × 78,314.35
  4. Step 4: Simplify right side
    79,200.09x = 9,280,631,474.31
  5. Step 5: Solve for x
    x = 9,280,631,474.31/79,200.09
  6. Step 6: Final answer
    x = 117,179.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.