Home / 100,364.13-138,504.06-55,046.25

Finding the Fourth Proportional to 100,364.13, 138,504.06 and 55,046.25

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Solution

The fourth proportional to 100,364.13, 138,504.06 and 55,046.25 is: 75,964.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,364.13 : 138,504.06 = 55,046.25 : x
  2. Step 2: Convert to fraction form
    100,364.13/138,504.06 = 55,046.25/x
  3. Step 3: Cross multiply
    100,364.13x = 138,504.06 × 55,046.25
  4. Step 4: Simplify right side
    100,364.13x = 7,624,129,112.78
  5. Step 5: Solve for x
    x = 7,624,129,112.78/100,364.13
  6. Step 6: Final answer
    x = 75,964.68

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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.