Home / 140,199.90-193,478.79-76,540.38

Finding the Fourth Proportional to 140,199.90, 193,478.79 and 76,540.38

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Solution

The fourth proportional to 140,199.90, 193,478.79 and 76,540.38 is: 105,627.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,199.90 : 193,478.79 = 76,540.38 : x
  2. Step 2: Convert to fraction form
    140,199.90/193,478.79 = 76,540.38/x
  3. Step 3: Cross multiply
    140,199.90x = 193,478.79 × 76,540.38
  4. Step 4: Simplify right side
    140,199.90x = 14,808,940,108.54
  5. Step 5: Solve for x
    x = 14,808,940,108.54/140,199.90
  6. Step 6: Final answer
    x = 105,627.32

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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.