Home / 100,299.06-138,406.32-54,969.03

Finding the Fourth Proportional to 100,299.06, 138,406.32 and 54,969.03

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Solution

The fourth proportional to 100,299.06, 138,406.32 and 54,969.03 is: 75,853.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,299.06 : 138,406.32 = 54,969.03 : x
  2. Step 2: Convert to fraction form
    100,299.06/138,406.32 = 54,969.03/x
  3. Step 3: Cross multiply
    100,299.06x = 138,406.32 × 54,969.03
  4. Step 4: Simplify right side
    100,299.06x = 7,608,061,156.27
  5. Step 5: Solve for x
    x = 7,608,061,156.27/100,299.06
  6. Step 6: Final answer
    x = 75,853.76

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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.