Home / 190,761.40-263,212.50-122,671.72

Finding the Fourth Proportional to 190,761.40, 263,212.50 and 122,671.72

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Solution

The fourth proportional to 190,761.40, 263,212.50 and 122,671.72 is: 169,262.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,761.40 : 263,212.50 = 122,671.72 : x
  2. Step 2: Convert to fraction form
    190,761.40/263,212.50 = 122,671.72/x
  3. Step 3: Cross multiply
    190,761.40x = 263,212.50 × 122,671.72
  4. Step 4: Simplify right side
    190,761.40x = 32,288,730,100.50
  5. Step 5: Solve for x
    x = 32,288,730,100.50/190,761.40
  6. Step 6: Final answer
    x = 169,262.39

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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.