Home / 198,509.74-297,597.14-86,105.33

Finding the Fourth Proportional to 198,509.74, 297,597.14 and 86,105.33

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Solution

The fourth proportional to 198,509.74, 297,597.14 and 86,105.33 is: 129,085.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,509.74 : 297,597.14 = 86,105.33 : x
  2. Step 2: Convert to fraction form
    198,509.74/297,597.14 = 86,105.33/x
  3. Step 3: Cross multiply
    198,509.74x = 297,597.14 × 86,105.33
  4. Step 4: Simplify right side
    198,509.74x = 25,624,699,467.13
  5. Step 5: Solve for x
    x = 25,624,699,467.13/198,509.74
  6. Step 6: Final answer
    x = 129,085.35

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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.