Home / 136,649.23-188,567.82-79,284.11

Finding the Fourth Proportional to 136,649.23, 188,567.82 and 79,284.11

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Solution

The fourth proportional to 136,649.23, 188,567.82 and 79,284.11 is: 109,407.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,649.23 : 188,567.82 = 79,284.11 : x
  2. Step 2: Convert to fraction form
    136,649.23/188,567.82 = 79,284.11/x
  3. Step 3: Cross multiply
    136,649.23x = 188,567.82 × 79,284.11
  4. Step 4: Simplify right side
    136,649.23x = 14,950,431,147.86
  5. Step 5: Solve for x
    x = 14,950,431,147.86/136,649.23
  6. Step 6: Final answer
    x = 109,407.36

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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.