Home / 190,205.08-285,355-57,087.80

Finding the Fourth Proportional to 190,205.08, 285,355 and 57,087.80

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Solution

The fourth proportional to 190,205.08, 285,355 and 57,087.80 is: 85,645.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,205.08 : 285,355 = 57,087.80 : x
  2. Step 2: Convert to fraction form
    190,205.08/285,355 = 57,087.80/x
  3. Step 3: Cross multiply
    190,205.08x = 285,355 × 57,087.80
  4. Step 4: Simplify right side
    190,205.08x = 16,290,289,169
  5. Step 5: Solve for x
    x = 16,290,289,169/190,205.08
  6. Step 6: Final answer
    x = 85,645.92

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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.