Home / 74,219.60-111,329.40-69,942.80

Finding the Fourth Proportional to 74,219.60, 111,329.40 and 69,942.80

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Solution

The fourth proportional to 74,219.60, 111,329.40 and 69,942.80 is: 104,914.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,219.60 : 111,329.40 = 69,942.80 : x
  2. Step 2: Convert to fraction form
    74,219.60/111,329.40 = 69,942.80/x
  3. Step 3: Cross multiply
    74,219.60x = 111,329.40 × 69,942.80
  4. Step 4: Simplify right side
    74,219.60x = 7,786,689,958.32
  5. Step 5: Solve for x
    x = 7,786,689,958.32/74,219.60
  6. Step 6: Final answer
    x = 104,914.20

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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.