Home / 190,853.82-286,379.10-78,616.98

Finding the Fourth Proportional to 190,853.82, 286,379.10 and 78,616.98

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Solution

The fourth proportional to 190,853.82, 286,379.10 and 78,616.98 is: 117,965.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,853.82 : 286,379.10 = 78,616.98 : x
  2. Step 2: Convert to fraction form
    190,853.82/286,379.10 = 78,616.98/x
  3. Step 3: Cross multiply
    190,853.82x = 286,379.10 × 78,616.98
  4. Step 4: Simplify right side
    190,853.82x = 22,514,259,977.12
  5. Step 5: Solve for x
    x = 22,514,259,977.12/190,853.82
  6. Step 6: Final answer
    x = 117,965.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.