Finding the Fourth Proportional to 128,848.50, 177,888.69 and 84,214.26
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Solution
The fourth proportional to 128,848.50, 177,888.69 and 84,214.26 is: 116,266.50
Step by Step Solution
- Step 1: Write the proportion equation
128,848.50 : 177,888.69 = 84,214.26 : x - Step 2: Convert to fraction form
128,848.50/177,888.69 = 84,214.26/x - Step 3: Cross multiply
128,848.50x = 177,888.69 × 84,214.26 - Step 4: Simplify right side
128,848.50x = 14,980,764,390.72 - Step 5: Solve for x
x = 14,980,764,390.72/128,848.50 - Step 6: Final answer
x = 116,266.50
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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.