Home / 127,860.80-191,791.20-105,742.40

Finding the Fourth Proportional to 127,860.80, 191,791.20 and 105,742.40

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Solution

The fourth proportional to 127,860.80, 191,791.20 and 105,742.40 is: 158,613.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,860.80 : 191,791.20 = 105,742.40 : x
  2. Step 2: Convert to fraction form
    127,860.80/191,791.20 = 105,742.40/x
  3. Step 3: Cross multiply
    127,860.80x = 191,791.20 × 105,742.40
  4. Step 4: Simplify right side
    127,860.80x = 20,280,461,786.88
  5. Step 5: Solve for x
    x = 20,280,461,786.88/127,860.80
  6. Step 6: Final answer
    x = 158,613.60

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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.