Home / 140,136.27-193,394.36-78,903.55

Finding the Fourth Proportional to 140,136.27, 193,394.36 and 78,903.55

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Solution

The fourth proportional to 140,136.27, 193,394.36 and 78,903.55 is: 108,890.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,136.27 : 193,394.36 = 78,903.55 : x
  2. Step 2: Convert to fraction form
    140,136.27/193,394.36 = 78,903.55/x
  3. Step 3: Cross multiply
    140,136.27x = 193,394.36 × 78,903.55
  4. Step 4: Simplify right side
    140,136.27x = 15,259,501,553.98
  5. Step 5: Solve for x
    x = 15,259,501,553.98/140,136.27
  6. Step 6: Final answer
    x = 108,890.45

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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.