Home / 189,520.54-261,536.35-103,479.25

Finding the Fourth Proportional to 189,520.54, 261,536.35 and 103,479.25

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Solution

The fourth proportional to 189,520.54, 261,536.35 and 103,479.25 is: 142,800.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,520.54 : 261,536.35 = 103,479.25 : x
  2. Step 2: Convert to fraction form
    189,520.54/261,536.35 = 103,479.25/x
  3. Step 3: Cross multiply
    189,520.54x = 261,536.35 × 103,479.25
  4. Step 4: Simplify right side
    189,520.54x = 27,063,585,339.87
  5. Step 5: Solve for x
    x = 27,063,585,339.87/189,520.54
  6. Step 6: Final answer
    x = 142,800.28

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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.