Home / 128,341.67-192,680.18-103,054.69

Finding the Fourth Proportional to 128,341.67, 192,680.18 and 103,054.69

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Solution

The fourth proportional to 128,341.67, 192,680.18 and 103,054.69 is: 154,716.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,341.67 : 192,680.18 = 103,054.69 : x
  2. Step 2: Convert to fraction form
    128,341.67/192,680.18 = 103,054.69/x
  3. Step 3: Cross multiply
    128,341.67x = 192,680.18 × 103,054.69
  4. Step 4: Simplify right side
    128,341.67x = 19,856,594,740.37
  5. Step 5: Solve for x
    x = 19,856,594,740.37/128,341.67
  6. Step 6: Final answer
    x = 154,716.66

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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.