Home / 120,340.80-180,576.78-53,778.24

Finding the Fourth Proportional to 120,340.80, 180,576.78 and 53,778.24

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Solution

The fourth proportional to 120,340.80, 180,576.78 and 53,778.24 is: 80,696.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,340.80 : 180,576.78 = 53,778.24 : x
  2. Step 2: Convert to fraction form
    120,340.80/180,576.78 = 53,778.24/x
  3. Step 3: Cross multiply
    120,340.80x = 180,576.78 × 53,778.24
  4. Step 4: Simplify right side
    120,340.80x = 9,711,101,413.27
  5. Step 5: Solve for x
    x = 9,711,101,413.27/120,340.80
  6. Step 6: Final answer
    x = 80,696.67

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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.