Home / 189,180.64-261,069.20-108,613.36

Finding the Fourth Proportional to 189,180.64, 261,069.20 and 108,613.36

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Solution

The fourth proportional to 189,180.64, 261,069.20 and 108,613.36 is: 149,886.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,180.64 : 261,069.20 = 108,613.36 : x
  2. Step 2: Convert to fraction form
    189,180.64/261,069.20 = 108,613.36/x
  3. Step 3: Cross multiply
    189,180.64x = 261,069.20 × 108,613.36
  4. Step 4: Simplify right side
    189,180.64x = 28,355,603,004.51
  5. Step 5: Solve for x
    x = 28,355,603,004.51/189,180.64
  6. Step 6: Final answer
    x = 149,886.39

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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.