Finding the Fourth Proportional to 118,210.20, 177,315.30 and 91,771.80
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Solution
The fourth proportional to 118,210.20, 177,315.30 and 91,771.80 is: 137,657.70
Step by Step Solution
- Step 1: Write the proportion equation
118,210.20 : 177,315.30 = 91,771.80 : x - Step 2: Convert to fraction form
118,210.20/177,315.30 = 91,771.80/x - Step 3: Cross multiply
118,210.20x = 177,315.30 × 91,771.80 - Step 4: Simplify right side
118,210.20x = 16,272,544,248.54 - Step 5: Solve for x
x = 16,272,544,248.54/118,210.20 - Step 6: Final answer
x = 137,657.70
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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.