Home / 208,111.21-287,199.20-126,411.84

Finding the Fourth Proportional to 208,111.21, 287,199.20 and 126,411.84

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Solution

The fourth proportional to 208,111.21, 287,199.20 and 126,411.84 is: 174,451.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,111.21 : 287,199.20 = 126,411.84 : x
  2. Step 2: Convert to fraction form
    208,111.21/287,199.20 = 126,411.84/x
  3. Step 3: Cross multiply
    208,111.21x = 287,199.20 × 126,411.84
  4. Step 4: Simplify right side
    208,111.21x = 36,305,379,634.56
  5. Step 5: Solve for x
    x = 36,305,379,634.56/208,111.21
  6. Step 6: Final answer
    x = 174,451.82

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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.