Home / 129,777.03-179,087.27-72,413.37

Finding the Fourth Proportional to 129,777.03, 179,087.27 and 72,413.37

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Solution

The fourth proportional to 129,777.03, 179,087.27 and 72,413.37 is: 99,927.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,777.03 : 179,087.27 = 72,413.37 : x
  2. Step 2: Convert to fraction form
    129,777.03/179,087.27 = 72,413.37/x
  3. Step 3: Cross multiply
    129,777.03x = 179,087.27 × 72,413.37
  4. Step 4: Simplify right side
    129,777.03x = 12,968,311,487.30
  5. Step 5: Solve for x
    x = 12,968,311,487.30/129,777.03
  6. Step 6: Final answer
    x = 99,927.64

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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.