Home / 120,005.33-165,604.14-66,289.19

Finding the Fourth Proportional to 120,005.33, 165,604.14 and 66,289.19

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Solution

The fourth proportional to 120,005.33, 165,604.14 and 66,289.19 is: 91,477.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,005.33 : 165,604.14 = 66,289.19 : x
  2. Step 2: Convert to fraction form
    120,005.33/165,604.14 = 66,289.19/x
  3. Step 3: Cross multiply
    120,005.33x = 165,604.14 × 66,289.19
  4. Step 4: Simplify right side
    120,005.33x = 10,977,763,473.23
  5. Step 5: Solve for x
    x = 10,977,763,473.23/120,005.33
  6. Step 6: Final answer
    x = 91,477.30

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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.