Home / 143,588.93-198,138.41-83,178.98

Finding the Fourth Proportional to 143,588.93, 198,138.41 and 83,178.98

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Solution

The fourth proportional to 143,588.93, 198,138.41 and 83,178.98 is: 114,778.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,588.93 : 198,138.41 = 83,178.98 : x
  2. Step 2: Convert to fraction form
    143,588.93/198,138.41 = 83,178.98/x
  3. Step 3: Cross multiply
    143,588.93x = 198,138.41 × 83,178.98
  4. Step 4: Simplify right side
    143,588.93x = 16,480,949,436.03
  5. Step 5: Solve for x
    x = 16,480,949,436.03/143,588.93
  6. Step 6: Final answer
    x = 114,778.70

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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.