Finding the Fourth Proportional to 128,831.20, 193,246.80 and 114,056.80
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Solution
The fourth proportional to 128,831.20, 193,246.80 and 114,056.80 is: 171,085.20
Step by Step Solution
- Step 1: Write the proportion equation
128,831.20 : 193,246.80 = 114,056.80 : x - Step 2: Convert to fraction form
128,831.20/193,246.80 = 114,056.80/x - Step 3: Cross multiply
128,831.20x = 193,246.80 × 114,056.80 - Step 4: Simplify right side
128,831.20x = 22,041,111,618.24 - Step 5: Solve for x
x = 22,041,111,618.24/128,831.20 - Step 6: Final answer
x = 171,085.20
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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.