Finding the Fourth Proportional to 118,138.98, 177,011.16 and 83,015.76
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Solution
The fourth proportional to 118,138.98, 177,011.16 and 83,015.76 is: 124,384.99
Step by Step Solution
- Step 1: Write the proportion equation
118,138.98 : 177,011.16 = 83,015.76 : x - Step 2: Convert to fraction form
118,138.98/177,011.16 = 83,015.76/x - Step 3: Cross multiply
118,138.98x = 177,011.16 × 83,015.76 - Step 4: Simplify right side
118,138.98x = 14,694,715,975.88 - Step 5: Solve for x
x = 14,694,715,975.88/118,138.98 - Step 6: Final answer
x = 124,384.99
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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.