Home / 104,928.40-157,334.89-71,686

Finding the Fourth Proportional to 104,928.40, 157,334.89 and 71,686

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Solution

The fourth proportional to 104,928.40, 157,334.89 and 71,686 is: 107,489.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,928.40 : 157,334.89 = 71,686 : x
  2. Step 2: Convert to fraction form
    104,928.40/157,334.89 = 71,686/x
  3. Step 3: Cross multiply
    104,928.40x = 157,334.89 × 71,686
  4. Step 4: Simplify right side
    104,928.40x = 11,278,708,924.54
  5. Step 5: Solve for x
    x = 11,278,708,924.54/104,928.40
  6. Step 6: Final answer
    x = 107,489.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.