Home / 107,943.90-149,003.58-81,164.16

Finding the Fourth Proportional to 107,943.90, 149,003.58 and 81,164.16

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Solution

The fourth proportional to 107,943.90, 149,003.58 and 81,164.16 is: 112,037.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,943.90 : 149,003.58 = 81,164.16 : x
  2. Step 2: Convert to fraction form
    107,943.90/149,003.58 = 81,164.16/x
  3. Step 3: Cross multiply
    107,943.90x = 149,003.58 × 81,164.16
  4. Step 4: Simplify right side
    107,943.90x = 12,093,750,407.69
  5. Step 5: Solve for x
    x = 12,093,750,407.69/107,943.90
  6. Step 6: Final answer
    x = 112,037.37

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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.