Home / 127,522.20-191,283.30-76,783.80

Finding the Fourth Proportional to 127,522.20, 191,283.30 and 76,783.80

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Solution

The fourth proportional to 127,522.20, 191,283.30 and 76,783.80 is: 115,175.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,522.20 : 191,283.30 = 76,783.80 : x
  2. Step 2: Convert to fraction form
    127,522.20/191,283.30 = 76,783.80/x
  3. Step 3: Cross multiply
    127,522.20x = 191,283.30 × 76,783.80
  4. Step 4: Simplify right side
    127,522.20x = 14,687,458,650.54
  5. Step 5: Solve for x
    x = 14,687,458,650.54/127,522.20
  6. Step 6: Final answer
    x = 115,175.70

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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.