Finding the Fourth Proportional to 128,636.08, 177,539.76 and 74,952.91
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Solution
The fourth proportional to 128,636.08, 177,539.76 and 74,952.91 is: 103,447.82
Step by Step Solution
- Step 1: Write the proportion equation
128,636.08 : 177,539.76 = 74,952.91 : x - Step 2: Convert to fraction form
128,636.08/177,539.76 = 74,952.91/x - Step 3: Cross multiply
128,636.08x = 177,539.76 × 74,952.91 - Step 4: Simplify right side
128,636.08x = 13,307,121,652.70 - Step 5: Solve for x
x = 13,307,121,652.70/128,636.08 - Step 6: Final answer
x = 103,447.82
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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.