Finding the Fourth Proportional to 128,001.68, 176,642.44 and 71,413.08
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Solution
The fourth proportional to 128,001.68, 176,642.44 and 71,413.08 is: 98,550.12
Step by Step Solution
- Step 1: Write the proportion equation
128,001.68 : 176,642.44 = 71,413.08 : x - Step 2: Convert to fraction form
128,001.68/176,642.44 = 71,413.08/x - Step 3: Cross multiply
128,001.68x = 176,642.44 × 71,413.08 - Step 4: Simplify right side
128,001.68x = 12,614,580,699.12 - Step 5: Solve for x
x = 12,614,580,699.12/128,001.68 - Step 6: Final answer
x = 98,550.12
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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.