Home / 154,393.20-213,066.44-86,409.60

Finding the Fourth Proportional to 154,393.20, 213,066.44 and 86,409.60

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Solution

The fourth proportional to 154,393.20, 213,066.44 and 86,409.60 is: 119,247.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,393.20 : 213,066.44 = 86,409.60 : x
  2. Step 2: Convert to fraction form
    154,393.20/213,066.44 = 86,409.60/x
  3. Step 3: Cross multiply
    154,393.20x = 213,066.44 × 86,409.60
  4. Step 4: Simplify right side
    154,393.20x = 18,410,985,853.82
  5. Step 5: Solve for x
    x = 18,410,985,853.82/154,393.20
  6. Step 6: Final answer
    x = 119,247.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.