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Finding the Fourth Proportional to 131,036.60, 196,554.90 and 121,413.80

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Solution

The fourth proportional to 131,036.60, 196,554.90 and 121,413.80 is: 182,120.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,036.60 : 196,554.90 = 121,413.80 : x
  2. Step 2: Convert to fraction form
    131,036.60/196,554.90 = 121,413.80/x
  3. Step 3: Cross multiply
    131,036.60x = 196,554.90 × 121,413.80
  4. Step 4: Simplify right side
    131,036.60x = 23,864,477,317.62
  5. Step 5: Solve for x
    x = 23,864,477,317.62/131,036.60
  6. Step 6: Final answer
    x = 182,120.70

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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.