Home / 77,923.20-117,025.60-68,246.40

Finding the Fourth Proportional to 77,923.20, 117,025.60 and 68,246.40

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Solution

The fourth proportional to 77,923.20, 117,025.60 and 68,246.40 is: 102,492.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,923.20 : 117,025.60 = 68,246.40 : x
  2. Step 2: Convert to fraction form
    77,923.20/117,025.60 = 68,246.40/x
  3. Step 3: Cross multiply
    77,923.20x = 117,025.60 × 68,246.40
  4. Step 4: Simplify right side
    77,923.20x = 7,986,575,907.84
  5. Step 5: Solve for x
    x = 7,986,575,907.84/77,923.20
  6. Step 6: Final answer
    x = 102,492.91

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1.5x scale

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.