Home / 190,695.56-286,135.50-78,458.60

Finding the Fourth Proportional to 190,695.56, 286,135.50 and 78,458.60

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Solution

The fourth proportional to 190,695.56, 286,135.50 and 78,458.60 is: 117,725.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,695.56 : 286,135.50 = 78,458.60 : x
  2. Step 2: Convert to fraction form
    190,695.56/286,135.50 = 78,458.60/x
  3. Step 3: Cross multiply
    190,695.56x = 286,135.50 × 78,458.60
  4. Step 4: Simplify right side
    190,695.56x = 22,449,790,740.30
  5. Step 5: Solve for x
    x = 22,449,790,740.30/190,695.56
  6. Step 6: Final answer
    x = 117,725.82

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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.