Finding the Fourth Proportional to 128,277.30, 177,033.58 and 74,558.88
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Solution
The fourth proportional to 128,277.30, 177,033.58 and 74,558.88 is: 102,897.59
Step by Step Solution
- Step 1: Write the proportion equation
128,277.30 : 177,033.58 = 74,558.88 : x - Step 2: Convert to fraction form
128,277.30/177,033.58 = 74,558.88/x - Step 3: Cross multiply
128,277.30x = 177,033.58 × 74,558.88 - Step 4: Simplify right side
128,277.30x = 13,199,425,447.19 - Step 5: Solve for x
x = 13,199,425,447.19/128,277.30 - Step 6: Final answer
x = 102,897.59
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1.5x scale
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.