Finding the Fourth Proportional to 128,802.14, 177,748.79 and 77,807.79
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Solution
The fourth proportional to 128,802.14, 177,748.79 and 77,807.79 is: 107,375.86
Step by Step Solution
- Step 1: Write the proportion equation
128,802.14 : 177,748.79 = 77,807.79 : x - Step 2: Convert to fraction form
128,802.14/177,748.79 = 77,807.79/x - Step 3: Cross multiply
128,802.14x = 177,748.79 × 77,807.79 - Step 4: Simplify right side
128,802.14x = 13,830,240,136.04 - Step 5: Solve for x
x = 13,830,240,136.04/128,802.14 - Step 6: Final answer
x = 107,375.86
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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.