Finding the Fourth Proportional to 128,924.91, 177,927.03 and 71,569.62
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Solution
The fourth proportional to 128,924.91, 177,927.03 and 71,569.62 is: 98,771.99
Step by Step Solution
- Step 1: Write the proportion equation
128,924.91 : 177,927.03 = 71,569.62 : x - Step 2: Convert to fraction form
128,924.91/177,927.03 = 71,569.62/x - Step 3: Cross multiply
128,924.91x = 177,927.03 × 71,569.62 - Step 4: Simplify right side
128,924.91x = 12,734,169,924.83 - Step 5: Solve for x
x = 12,734,169,924.83/128,924.91 - Step 6: Final answer
x = 98,771.99
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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.