Home / 112,986.80-169,480.20-28,746.80

Finding the Fourth Proportional to 112,986.80, 169,480.20 and 28,746.80

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Solution

The fourth proportional to 112,986.80, 169,480.20 and 28,746.80 is: 43,120.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,986.80 : 169,480.20 = 28,746.80 : x
  2. Step 2: Convert to fraction form
    112,986.80/169,480.20 = 28,746.80/x
  3. Step 3: Cross multiply
    112,986.80x = 169,480.20 × 28,746.80
  4. Step 4: Simplify right side
    112,986.80x = 4,872,013,413.36
  5. Step 5: Solve for x
    x = 4,872,013,413.36/112,986.80
  6. Step 6: Final answer
    x = 43,120.20

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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.