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Finding the Fourth Proportional to 163,348.80, 225,413.28 and 91,731.84

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Solution

The fourth proportional to 163,348.80, 225,413.28 and 91,731.84 is: 126,585.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,348.80 : 225,413.28 = 91,731.84 : x
  2. Step 2: Convert to fraction form
    163,348.80/225,413.28 = 91,731.84/x
  3. Step 3: Cross multiply
    163,348.80x = 225,413.28 × 91,731.84
  4. Step 4: Simplify right side
    163,348.80x = 20,677,574,934.84
  5. Step 5: Solve for x
    x = 20,677,574,934.84/163,348.80
  6. Step 6: Final answer
    x = 126,585.41

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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.