Home / 205,625.76-283,677.68-138,441.12

Finding the Fourth Proportional to 205,625.76, 283,677.68 and 138,441.12

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Solution

The fourth proportional to 205,625.76, 283,677.68 and 138,441.12 is: 190,990.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,625.76 : 283,677.68 = 138,441.12 : x
  2. Step 2: Convert to fraction form
    205,625.76/283,677.68 = 138,441.12/x
  3. Step 3: Cross multiply
    205,625.76x = 283,677.68 × 138,441.12
  4. Step 4: Simplify right side
    205,625.76x = 39,272,655,738.20
  5. Step 5: Solve for x
    x = 39,272,655,738.20/205,625.76
  6. Step 6: Final answer
    x = 190,990.93

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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.