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Finding the Fourth Proportional to 192,117.40, 288,003.30 and 121,960.60

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Solution

The fourth proportional to 192,117.40, 288,003.30 and 121,960.60 is: 182,831.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,117.40 : 288,003.30 = 121,960.60 : x
  2. Step 2: Convert to fraction form
    192,117.40/288,003.30 = 121,960.60/x
  3. Step 3: Cross multiply
    192,117.40x = 288,003.30 × 121,960.60
  4. Step 4: Simplify right side
    192,117.40x = 35,125,055,269.98
  5. Step 5: Solve for x
    x = 35,125,055,269.98/192,117.40
  6. Step 6: Final answer
    x = 182,831.20

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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.