Home / 100,433.37-138,597.67-55,112.11

Finding the Fourth Proportional to 100,433.37, 138,597.67 and 55,112.11

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Solution

The fourth proportional to 100,433.37, 138,597.67 and 55,112.11 is: 76,054.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,433.37 : 138,597.67 = 55,112.11 : x
  2. Step 2: Convert to fraction form
    100,433.37/138,597.67 = 55,112.11/x
  3. Step 3: Cross multiply
    100,433.37x = 138,597.67 × 55,112.11
  4. Step 4: Simplify right side
    100,433.37x = 7,638,410,139.14
  5. Step 5: Solve for x
    x = 7,638,410,139.14/100,433.37
  6. Step 6: Final answer
    x = 76,054.50

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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.