Home / 127,986-176,620.68-71,397.36

Finding the Fourth Proportional to 127,986, 176,620.68 and 71,397.36

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Solution

The fourth proportional to 127,986, 176,620.68 and 71,397.36 is: 98,528.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,986 : 176,620.68 = 71,397.36 : x
  2. Step 2: Convert to fraction form
    127,986/176,620.68 = 71,397.36/x
  3. Step 3: Cross multiply
    127,986x = 176,620.68 × 71,397.36
  4. Step 4: Simplify right side
    127,986x = 12,610,250,273.40
  5. Step 5: Solve for x
    x = 12,610,250,273.40/127,986
  6. Step 6: Final answer
    x = 98,528.36

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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.