Home / 153,982.69-212,496.21-86,914.69

Finding the Fourth Proportional to 153,982.69, 212,496.21 and 86,914.69

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Solution

The fourth proportional to 153,982.69, 212,496.21 and 86,914.69 is: 119,942.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,982.69 : 212,496.21 = 86,914.69 : x
  2. Step 2: Convert to fraction form
    153,982.69/212,496.21 = 86,914.69/x
  3. Step 3: Cross multiply
    153,982.69x = 212,496.21 × 86,914.69
  4. Step 4: Simplify right side
    153,982.69x = 18,469,041,687.08
  5. Step 5: Solve for x
    x = 18,469,041,687.08/153,982.69
  6. Step 6: Final answer
    x = 119,942.33

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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.