Home / 121,661.90-182,413.65-109,220.30

Finding the Fourth Proportional to 121,661.90, 182,413.65 and 109,220.30

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Solution

The fourth proportional to 121,661.90, 182,413.65 and 109,220.30 is: 163,759.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,661.90 : 182,413.65 = 109,220.30 : x
  2. Step 2: Convert to fraction form
    121,661.90/182,413.65 = 109,220.30/x
  3. Step 3: Cross multiply
    121,661.90x = 182,413.65 × 109,220.30
  4. Step 4: Simplify right side
    121,661.90x = 19,923,273,577.10
  5. Step 5: Solve for x
    x = 19,923,273,577.10/121,661.90
  6. Step 6: Final answer
    x = 163,759.35

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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.