Home / 140,358.12-193,707.36-76,705.38

Finding the Fourth Proportional to 140,358.12, 193,707.36 and 76,705.38

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Solution

The fourth proportional to 140,358.12, 193,707.36 and 76,705.38 is: 105,860.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,358.12 : 193,707.36 = 76,705.38 : x
  2. Step 2: Convert to fraction form
    140,358.12/193,707.36 = 76,705.38/x
  3. Step 3: Cross multiply
    140,358.12x = 193,707.36 × 76,705.38
  4. Step 4: Simplify right side
    140,358.12x = 14,858,396,657.60
  5. Step 5: Solve for x
    x = 14,858,396,657.60/140,358.12
  6. Step 6: Final answer
    x = 105,860.61

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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.