Home / 128,278.44-192,435.76-39,539.16

Finding the Fourth Proportional to 128,278.44, 192,435.76 and 39,539.16

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Solution

The fourth proportional to 128,278.44, 192,435.76 and 39,539.16 is: 59,314.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,278.44 : 192,435.76 = 39,539.16 : x
  2. Step 2: Convert to fraction form
    128,278.44/192,435.76 = 39,539.16/x
  3. Step 3: Cross multiply
    128,278.44x = 192,435.76 × 39,539.16
  4. Step 4: Simplify right side
    128,278.44x = 7,608,748,304.36
  5. Step 5: Solve for x
    x = 7,608,748,304.36/128,278.44
  6. Step 6: Final answer
    x = 59,314.32

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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.