Home / 140,033.12-193,243.62-76,370.78

Finding the Fourth Proportional to 140,033.12, 193,243.62 and 76,370.78

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Solution

The fourth proportional to 140,033.12, 193,243.62 and 76,370.78 is: 105,390.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,033.12 : 193,243.62 = 76,370.78 : x
  2. Step 2: Convert to fraction form
    140,033.12/193,243.62 = 76,370.78/x
  3. Step 3: Cross multiply
    140,033.12x = 193,243.62 × 76,370.78
  4. Step 4: Simplify right side
    140,033.12x = 14,758,165,989.42
  5. Step 5: Solve for x
    x = 14,758,165,989.42/140,033.12
  6. Step 6: Final answer
    x = 105,390.54

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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.