Home / 127,772.10-191,678.40-43,540.20

Finding the Fourth Proportional to 127,772.10, 191,678.40 and 43,540.20

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Solution

The fourth proportional to 127,772.10, 191,678.40 and 43,540.20 is: 65,317.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,772.10 : 191,678.40 = 43,540.20 : x
  2. Step 2: Convert to fraction form
    127,772.10/191,678.40 = 43,540.20/x
  3. Step 3: Cross multiply
    127,772.10x = 191,678.40 × 43,540.20
  4. Step 4: Simplify right side
    127,772.10x = 8,345,715,871.68
  5. Step 5: Solve for x
    x = 8,345,715,871.68/127,772.10
  6. Step 6: Final answer
    x = 65,317.20

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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.