Home / 127,986.19-176,608.68-71,401.21

Finding the Fourth Proportional to 127,986.19, 176,608.68 and 71,401.21

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Solution

The fourth proportional to 127,986.19, 176,608.68 and 71,401.21 is: 98,526.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,986.19 : 176,608.68 = 71,401.21 : x
  2. Step 2: Convert to fraction form
    127,986.19/176,608.68 = 71,401.21/x
  3. Step 3: Cross multiply
    127,986.19x = 176,608.68 × 71,401.21
  4. Step 4: Simplify right side
    127,986.19x = 12,610,073,448.50
  5. Step 5: Solve for x
    x = 12,610,073,448.50/127,986.19
  6. Step 6: Final answer
    x = 98,526.83

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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.