Home / 100,754.33-139,040.97-55,431.34

Finding the Fourth Proportional to 100,754.33, 139,040.97 and 55,431.34

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Solution

The fourth proportional to 100,754.33, 139,040.97 and 55,431.34 is: 76,495.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,754.33 : 139,040.97 = 55,431.34 : x
  2. Step 2: Convert to fraction form
    100,754.33/139,040.97 = 55,431.34/x
  3. Step 3: Cross multiply
    100,754.33x = 139,040.97 × 55,431.34
  4. Step 4: Simplify right side
    100,754.33x = 7,707,227,282.00
  5. Step 5: Solve for x
    x = 7,707,227,282.00/100,754.33
  6. Step 6: Final answer
    x = 76,495.25

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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.