Home / 127,154.85-190,290.78-79,103.73

Finding the Fourth Proportional to 127,154.85, 190,290.78 and 79,103.73

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Solution

The fourth proportional to 127,154.85, 190,290.78 and 79,103.73 is: 118,380.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,154.85 : 190,290.78 = 79,103.73 : x
  2. Step 2: Convert to fraction form
    127,154.85/190,290.78 = 79,103.73/x
  3. Step 3: Cross multiply
    127,154.85x = 190,290.78 × 79,103.73
  4. Step 4: Simplify right side
    127,154.85x = 15,052,710,482.61
  5. Step 5: Solve for x
    x = 15,052,710,482.61/127,154.85
  6. Step 6: Final answer
    x = 118,380.94

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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.