Home / 128,339.25-191,568.86-113,188.95

Finding the Fourth Proportional to 128,339.25, 191,568.86 and 113,188.95

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Solution

The fourth proportional to 128,339.25, 191,568.86 and 113,188.95 is: 168,954.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,339.25 : 191,568.86 = 113,188.95 : x
  2. Step 2: Convert to fraction form
    128,339.25/191,568.86 = 113,188.95/x
  3. Step 3: Cross multiply
    128,339.25x = 191,568.86 × 113,188.95
  4. Step 4: Simplify right side
    128,339.25x = 21,683,477,550.15
  5. Step 5: Solve for x
    x = 21,683,477,550.15/128,339.25
  6. Step 6: Final answer
    x = 168,954.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.