Home / 189,299.47-261,261.55-121,393.12

Finding the Fourth Proportional to 189,299.47, 261,261.55 and 121,393.12

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Solution

The fourth proportional to 189,299.47, 261,261.55 and 121,393.12 is: 167,540.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,299.47 : 261,261.55 = 121,393.12 : x
  2. Step 2: Convert to fraction form
    189,299.47/261,261.55 = 121,393.12/x
  3. Step 3: Cross multiply
    189,299.47x = 261,261.55 × 121,393.12
  4. Step 4: Simplify right side
    189,299.47x = 31,715,354,690.54
  5. Step 5: Solve for x
    x = 31,715,354,690.54/189,299.47
  6. Step 6: Final answer
    x = 167,540.64

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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.