Home / 131,577.20-197,365.80-121,439.60

Finding the Fourth Proportional to 131,577.20, 197,365.80 and 121,439.60

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Solution

The fourth proportional to 131,577.20, 197,365.80 and 121,439.60 is: 182,159.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,577.20 : 197,365.80 = 121,439.60 : x
  2. Step 2: Convert to fraction form
    131,577.20/197,365.80 = 121,439.60/x
  3. Step 3: Cross multiply
    131,577.20x = 197,365.80 × 121,439.60
  4. Step 4: Simplify right side
    131,577.20x = 23,968,023,805.68
  5. Step 5: Solve for x
    x = 23,968,023,805.68/131,577.20
  6. Step 6: Final answer
    x = 182,159.40

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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.