Home / 120,288.63-165,991.43-66,570.45

Finding the Fourth Proportional to 120,288.63, 165,991.43 and 66,570.45

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Solution

The fourth proportional to 120,288.63, 165,991.43 and 66,570.45 is: 91,863.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,288.63 : 165,991.43 = 66,570.45 : x
  2. Step 2: Convert to fraction form
    120,288.63/165,991.43 = 66,570.45/x
  3. Step 3: Cross multiply
    120,288.63x = 165,991.43 × 66,570.45
  4. Step 4: Simplify right side
    120,288.63x = 11,050,123,735.20
  5. Step 5: Solve for x
    x = 11,050,123,735.20/120,288.63
  6. Step 6: Final answer
    x = 91,863.41

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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.