Home / 129,637.60-194,456.40-120,889.60

Finding the Fourth Proportional to 129,637.60, 194,456.40 and 120,889.60

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Solution

The fourth proportional to 129,637.60, 194,456.40 and 120,889.60 is: 181,334.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,637.60 : 194,456.40 = 120,889.60 : x
  2. Step 2: Convert to fraction form
    129,637.60/194,456.40 = 120,889.60/x
  3. Step 3: Cross multiply
    129,637.60x = 194,456.40 × 120,889.60
  4. Step 4: Simplify right side
    129,637.60x = 23,507,756,413.44
  5. Step 5: Solve for x
    x = 23,507,756,413.44/129,637.60
  6. Step 6: Final answer
    x = 181,334.40

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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.