Finding the Fourth Proportional to 145,051.88, 217,643.08 and 78,413.99
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Solution
The fourth proportional to 145,051.88, 217,643.08 and 78,413.99 is: 117,656.26
Step by Step Solution
- Step 1: Write the proportion equation
145,051.88 : 217,643.08 = 78,413.99 : x - Step 2: Convert to fraction form
145,051.88/217,643.08 = 78,413.99/x - Step 3: Cross multiply
145,051.88x = 217,643.08 × 78,413.99 - Step 4: Simplify right side
145,051.88x = 17,066,262,298.69 - Step 5: Solve for x
x = 17,066,262,298.69/145,051.88 - Step 6: Final answer
x = 117,656.26
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.