Home / 100,435.14-138,601.80-55,112.22

Finding the Fourth Proportional to 100,435.14, 138,601.80 and 55,112.22

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Solution

The fourth proportional to 100,435.14, 138,601.80 and 55,112.22 is: 76,055.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,435.14 : 138,601.80 = 55,112.22 : x
  2. Step 2: Convert to fraction form
    100,435.14/138,601.80 = 55,112.22/x
  3. Step 3: Cross multiply
    100,435.14x = 138,601.80 × 55,112.22
  4. Step 4: Simplify right side
    100,435.14x = 7,638,652,894.00
  5. Step 5: Solve for x
    x = 7,638,652,894.00/100,435.14
  6. Step 6: Final answer
    x = 76,055.58

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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.