Home / 140,516.16-193,919.40-83,188.38

Finding the Fourth Proportional to 140,516.16, 193,919.40 and 83,188.38

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Solution

The fourth proportional to 140,516.16, 193,919.40 and 83,188.38 is: 114,804.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,516.16 : 193,919.40 = 83,188.38 : x
  2. Step 2: Convert to fraction form
    140,516.16/193,919.40 = 83,188.38/x
  3. Step 3: Cross multiply
    140,516.16x = 193,919.40 × 83,188.38
  4. Step 4: Simplify right side
    140,516.16x = 16,131,840,736.57
  5. Step 5: Solve for x
    x = 16,131,840,736.57/140,516.16
  6. Step 6: Final answer
    x = 114,804.17

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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.