Home / 131,407.70-196,825.24-86,378.22

Finding the Fourth Proportional to 131,407.70, 196,825.24 and 86,378.22

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Solution

The fourth proportional to 131,407.70, 196,825.24 and 86,378.22 is: 129,379.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,407.70 : 196,825.24 = 86,378.22 : x
  2. Step 2: Convert to fraction form
    131,407.70/196,825.24 = 86,378.22/x
  3. Step 3: Cross multiply
    131,407.70x = 196,825.24 × 86,378.22
  4. Step 4: Simplify right side
    131,407.70x = 17,001,413,882.27
  5. Step 5: Solve for x
    x = 17,001,413,882.27/131,407.70
  6. Step 6: Final answer
    x = 129,379.13

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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.