Finding the Fourth Proportional to 128,276.54, 177,006.29 and 70,908.14
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Solution
The fourth proportional to 128,276.54, 177,006.29 and 70,908.14 is: 97,844.75
Step by Step Solution
- Step 1: Write the proportion equation
128,276.54 : 177,006.29 = 70,908.14 : x - Step 2: Convert to fraction form
128,276.54/177,006.29 = 70,908.14/x - Step 3: Cross multiply
128,276.54x = 177,006.29 × 70,908.14 - Step 4: Simplify right side
128,276.54x = 12,551,185,818.53 - Step 5: Solve for x
x = 12,551,185,818.53/128,276.54 - Step 6: Final answer
x = 97,844.75
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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.