Finding the Fourth Proportional to 118,206,831.20, 177,310,246.80 and 72,857,199.20
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Solution
The fourth proportional to 118,206,831.20, 177,310,246.80 and 72,857,199.20 is: 109,285,798.80
Step by Step Solution
- Step 1: Write the proportion equation
118,206,831.20 : 177,310,246.80 = 72,857,199.20 : x - Step 2: Convert to fraction form
118,206,831.20/177,310,246.80 = 72,857,199.20/x - Step 3: Cross multiply
118,206,831.20x = 177,310,246.80 × 72,857,199.20 - Step 4: Simplify right side
118,206,831.20x = 12,918,327,971,308,764 - Step 5: Solve for x
x = 12,918,327,971,308,764/118,206,831.20 - Step 6: Final answer
x = 109,285,798.80
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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.