Home / 128,308.44-192,450.29-39,538.11

Finding the Fourth Proportional to 128,308.44, 192,450.29 and 39,538.11

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Solution

The fourth proportional to 128,308.44, 192,450.29 and 39,538.11 is: 59,303.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,308.44 : 192,450.29 = 39,538.11 : x
  2. Step 2: Convert to fraction form
    128,308.44/192,450.29 = 39,538.11/x
  3. Step 3: Cross multiply
    128,308.44x = 192,450.29 × 39,538.11
  4. Step 4: Simplify right side
    128,308.44x = 7,609,120,537.86
  5. Step 5: Solve for x
    x = 7,609,120,537.86/128,308.44
  6. Step 6: Final answer
    x = 59,303.35

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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.