Home / 140,135.77-193,393.67-78,903.05

Finding the Fourth Proportional to 140,135.77, 193,393.67 and 78,903.05

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Solution

The fourth proportional to 140,135.77, 193,393.67 and 78,903.05 is: 108,889.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,135.77 : 193,393.67 = 78,903.05 : x
  2. Step 2: Convert to fraction form
    140,135.77/193,393.67 = 78,903.05/x
  3. Step 3: Cross multiply
    140,135.77x = 193,393.67 × 78,903.05
  4. Step 4: Simplify right side
    140,135.77x = 15,259,350,413.69
  5. Step 5: Solve for x
    x = 15,259,350,413.69/140,135.77
  6. Step 6: Final answer
    x = 108,889.76

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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.