Home / 120,154.64-165,806.28-66,435.44

Finding the Fourth Proportional to 120,154.64, 165,806.28 and 66,435.44

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Solution

The fourth proportional to 120,154.64, 165,806.28 and 66,435.44 is: 91,676.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,154.64 : 165,806.28 = 66,435.44 : x
  2. Step 2: Convert to fraction form
    120,154.64/165,806.28 = 66,435.44/x
  3. Step 3: Cross multiply
    120,154.64x = 165,806.28 × 66,435.44
  4. Step 4: Simplify right side
    120,154.64x = 11,015,413,166.56
  5. Step 5: Solve for x
    x = 11,015,413,166.56/120,154.64
  6. Step 6: Final answer
    x = 91,676.97

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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.