Finding the Fourth Proportional to 128,340.70, 177,101.18 and 74,621.91
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Solution
The fourth proportional to 128,340.70, 177,101.18 and 74,621.91 is: 102,973.00
Step by Step Solution
- Step 1: Write the proportion equation
128,340.70 : 177,101.18 = 74,621.91 : x - Step 2: Convert to fraction form
128,340.70/177,101.18 = 74,621.91/x - Step 3: Cross multiply
128,340.70x = 177,101.18 × 74,621.91 - Step 4: Simplify right side
128,340.70x = 13,215,627,056.24 - Step 5: Solve for x
x = 13,215,627,056.24/128,340.70 - Step 6: Final answer
x = 102,973.00
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.