Home / 140,136.50-193,394.67-78,903.77

Finding the Fourth Proportional to 140,136.50, 193,394.67 and 78,903.77

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Solution

The fourth proportional to 140,136.50, 193,394.67 and 78,903.77 is: 108,890.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,136.50 : 193,394.67 = 78,903.77 : x
  2. Step 2: Convert to fraction form
    140,136.50/193,394.67 = 78,903.77/x
  3. Step 3: Cross multiply
    140,136.50x = 193,394.67 × 78,903.77
  4. Step 4: Simplify right side
    140,136.50x = 15,259,568,560.91
  5. Step 5: Solve for x
    x = 15,259,568,560.91/140,136.50
  6. Step 6: Final answer
    x = 108,890.75

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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.