Home / 140,186.63-193,503.70-111,558.80

Finding the Fourth Proportional to 140,186.63, 193,503.70 and 111,558.80

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Solution

The fourth proportional to 140,186.63, 193,503.70 and 111,558.80 is: 153,987.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,186.63 : 193,503.70 = 111,558.80 : x
  2. Step 2: Convert to fraction form
    140,186.63/193,503.70 = 111,558.80/x
  3. Step 3: Cross multiply
    140,186.63x = 193,503.70 × 111,558.80
  4. Step 4: Simplify right side
    140,186.63x = 21,587,040,567.56
  5. Step 5: Solve for x
    x = 21,587,040,567.56/140,186.63
  6. Step 6: Final answer
    x = 153,987.87

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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.