Home / 69,815.39-103,933.40-69,400.20

Finding the Fourth Proportional to 69,815.39, 103,933.40 and 69,400.20

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Solution

The fourth proportional to 69,815.39, 103,933.40 and 69,400.20 is: 103,315.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,815.39 : 103,933.40 = 69,400.20 : x
  2. Step 2: Convert to fraction form
    69,815.39/103,933.40 = 69,400.20/x
  3. Step 3: Cross multiply
    69,815.39x = 103,933.40 × 69,400.20
  4. Step 4: Simplify right side
    69,815.39x = 7,212,998,399.68
  5. Step 5: Solve for x
    x = 7,212,998,399.68/69,815.39
  6. Step 6: Final answer
    x = 103,315.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.