Home / 120,015.35-165,620.67-66,300.37

Finding the Fourth Proportional to 120,015.35, 165,620.67 and 66,300.37

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Solution

The fourth proportional to 120,015.35, 165,620.67 and 66,300.37 is: 91,494.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,015.35 : 165,620.67 = 66,300.37 : x
  2. Step 2: Convert to fraction form
    120,015.35/165,620.67 = 66,300.37/x
  3. Step 3: Cross multiply
    120,015.35x = 165,620.67 × 66,300.37
  4. Step 4: Simplify right side
    120,015.35x = 10,980,711,037.97
  5. Step 5: Solve for x
    x = 10,980,711,037.97/120,015.35
  6. Step 6: Final answer
    x = 91,494.22

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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.