Home / 100,435.37-138,600.43-55,114.11

Finding the Fourth Proportional to 100,435.37, 138,600.43 and 55,114.11

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Solution

The fourth proportional to 100,435.37, 138,600.43 and 55,114.11 is: 76,057.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,435.37 : 138,600.43 = 55,114.11 : x
  2. Step 2: Convert to fraction form
    100,435.37/138,600.43 = 55,114.11/x
  3. Step 3: Cross multiply
    100,435.37x = 138,600.43 × 55,114.11
  4. Step 4: Simplify right side
    100,435.37x = 7,638,839,345.07
  5. Step 5: Solve for x
    x = 7,638,839,345.07/100,435.37
  6. Step 6: Final answer
    x = 76,057.26

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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.