Home / 120,144.98-165,787.39-66,421.33

Finding the Fourth Proportional to 120,144.98, 165,787.39 and 66,421.33

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Solution

The fourth proportional to 120,144.98, 165,787.39 and 66,421.33 is: 91,654.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,144.98 : 165,787.39 = 66,421.33 : x
  2. Step 2: Convert to fraction form
    120,144.98/165,787.39 = 66,421.33/x
  3. Step 3: Cross multiply
    120,144.98x = 165,787.39 × 66,421.33
  4. Step 4: Simplify right side
    120,144.98x = 11,011,818,609.59
  5. Step 5: Solve for x
    x = 11,011,818,609.59/120,144.98
  6. Step 6: Final answer
    x = 91,654.42

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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.