Finding the Fourth Proportional to 102,979.62, 142,038.59 and 94,509.09
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Solution
The fourth proportional to 102,979.62, 142,038.59 and 94,509.09 is: 130,355.28
Step by Step Solution
- Step 1: Write the proportion equation
102,979.62 : 142,038.59 = 94,509.09 : x - Step 2: Convert to fraction form
102,979.62/142,038.59 = 94,509.09/x - Step 3: Cross multiply
102,979.62x = 142,038.59 × 94,509.09 - Step 4: Simplify right side
102,979.62x = 13,423,937,413.24 - Step 5: Solve for x
x = 13,423,937,413.24/102,979.62 - Step 6: Final answer
x = 130,355.28
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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.