Home / 140,152.13-193,415.27-79,728.29

Finding the Fourth Proportional to 140,152.13, 193,415.27 and 79,728.29

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Solution

The fourth proportional to 140,152.13, 193,415.27 and 79,728.29 is: 110,028.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,152.13 : 193,415.27 = 79,728.29 : x
  2. Step 2: Convert to fraction form
    140,152.13/193,415.27 = 79,728.29/x
  3. Step 3: Cross multiply
    140,152.13x = 193,415.27 × 79,728.29
  4. Step 4: Simplify right side
    140,152.13x = 15,420,667,371.27
  5. Step 5: Solve for x
    x = 15,420,667,371.27/140,152.13
  6. Step 6: Final answer
    x = 110,028.07

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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.