Home / 100,297.80-138,431.52-57,850.56

Finding the Fourth Proportional to 100,297.80, 138,431.52 and 57,850.56

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Solution

The fourth proportional to 100,297.80, 138,431.52 and 57,850.56 is: 79,845.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,297.80 : 138,431.52 = 57,850.56 : x
  2. Step 2: Convert to fraction form
    100,297.80/138,431.52 = 57,850.56/x
  3. Step 3: Cross multiply
    100,297.80x = 138,431.52 × 57,850.56
  4. Step 4: Simplify right side
    100,297.80x = 8,008,340,953.65
  5. Step 5: Solve for x
    x = 8,008,340,953.65/100,297.80
  6. Step 6: Final answer
    x = 79,845.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.