Home / 190,185.78-285,332.01-76,413.49

Finding the Fourth Proportional to 190,185.78, 285,332.01 and 76,413.49

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Solution

The fourth proportional to 190,185.78, 285,332.01 and 76,413.49 is: 114,641.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,185.78 : 285,332.01 = 76,413.49 : x
  2. Step 2: Convert to fraction form
    190,185.78/285,332.01 = 76,413.49/x
  3. Step 3: Cross multiply
    190,185.78x = 285,332.01 × 76,413.49
  4. Step 4: Simplify right side
    190,185.78x = 21,803,213,692.93
  5. Step 5: Solve for x
    x = 21,803,213,692.93/190,185.78
  6. Step 6: Final answer
    x = 114,641.66

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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.