Home / 185,413.20-256,080.48-124,878.72

Finding the Fourth Proportional to 185,413.20, 256,080.48 and 124,878.72

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Solution

The fourth proportional to 185,413.20, 256,080.48 and 124,878.72 is: 172,474.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,413.20 : 256,080.48 = 124,878.72 : x
  2. Step 2: Convert to fraction form
    185,413.20/256,080.48 = 124,878.72/x
  3. Step 3: Cross multiply
    185,413.20x = 256,080.48 × 124,878.72
  4. Step 4: Simplify right side
    185,413.20x = 31,979,002,559.39
  5. Step 5: Solve for x
    x = 31,979,002,559.39/185,413.20
  6. Step 6: Final answer
    x = 172,474.25

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1.5x scale

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.