Home / 111,013.60-166,520.40-66,107.20

Finding the Fourth Proportional to 111,013.60, 166,520.40 and 66,107.20

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Solution

The fourth proportional to 111,013.60, 166,520.40 and 66,107.20 is: 99,160.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,013.60 : 166,520.40 = 66,107.20 : x
  2. Step 2: Convert to fraction form
    111,013.60/166,520.40 = 66,107.20/x
  3. Step 3: Cross multiply
    111,013.60x = 166,520.40 × 66,107.20
  4. Step 4: Simplify right side
    111,013.60x = 11,008,197,386.88
  5. Step 5: Solve for x
    x = 11,008,197,386.88/111,013.60
  6. Step 6: Final answer
    x = 99,160.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.