Home / 140,187.15-193,455.78-79,756.49

Finding the Fourth Proportional to 140,187.15, 193,455.78 and 79,756.49

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Solution

The fourth proportional to 140,187.15, 193,455.78 and 79,756.49 is: 110,062.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,187.15 : 193,455.78 = 79,756.49 : x
  2. Step 2: Convert to fraction form
    140,187.15/193,455.78 = 79,756.49/x
  3. Step 3: Cross multiply
    140,187.15x = 193,455.78 × 79,756.49
  4. Step 4: Simplify right side
    140,187.15x = 15,429,354,466.65
  5. Step 5: Solve for x
    x = 15,429,354,466.65/140,187.15
  6. Step 6: Final answer
    x = 110,062.54

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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.