Home / 135,413.21-186,870.11-74,983.85

Finding the Fourth Proportional to 135,413.21, 186,870.11 and 74,983.85

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Solution

The fourth proportional to 135,413.21, 186,870.11 and 74,983.85 is: 103,477.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,413.21 : 186,870.11 = 74,983.85 : x
  2. Step 2: Convert to fraction form
    135,413.21/186,870.11 = 74,983.85/x
  3. Step 3: Cross multiply
    135,413.21x = 186,870.11 × 74,983.85
  4. Step 4: Simplify right side
    135,413.21x = 14,012,240,297.72
  5. Step 5: Solve for x
    x = 14,012,240,297.72/135,413.21
  6. Step 6: Final answer
    x = 103,477.65

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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.