Finding the Fourth Proportional to 128,002.86, 176,643.99 and 71,413.02
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Solution
The fourth proportional to 128,002.86, 176,643.99 and 71,413.02 is: 98,549.99
Step by Step Solution
- Step 1: Write the proportion equation
128,002.86 : 176,643.99 = 71,413.02 : x - Step 2: Convert to fraction form
128,002.86/176,643.99 = 71,413.02/x - Step 3: Cross multiply
128,002.86x = 176,643.99 × 71,413.02 - Step 4: Simplify right side
128,002.86x = 12,614,680,790.75 - Step 5: Solve for x
x = 12,614,680,790.75/128,002.86 - Step 6: Final answer
x = 98,549.99
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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.