Home / 78,226.54-117,339.58-67,665.15

Finding the Fourth Proportional to 78,226.54, 117,339.58 and 67,665.15

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Solution

The fourth proportional to 78,226.54, 117,339.58 and 67,665.15 is: 101,497.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,226.54 : 117,339.58 = 67,665.15 : x
  2. Step 2: Convert to fraction form
    78,226.54/117,339.58 = 67,665.15/x
  3. Step 3: Cross multiply
    78,226.54x = 117,339.58 × 67,665.15
  4. Step 4: Simplify right side
    78,226.54x = 7,939,800,281.64
  5. Step 5: Solve for x
    x = 7,939,800,281.64/78,226.54
  6. Step 6: Final answer
    x = 101,497.53

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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.