Finding the Fourth Proportional to 138,599.94, 191,267.49 and 74,937.74
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Solution
The fourth proportional to 138,599.94, 191,267.49 and 74,937.74 is: 103,413.84
Step by Step Solution
- Step 1: Write the proportion equation
138,599.94 : 191,267.49 = 74,937.74 : x - Step 2: Convert to fraction form
138,599.94/191,267.49 = 74,937.74/x - Step 3: Cross multiply
138,599.94x = 191,267.49 × 74,937.74 - Step 4: Simplify right side
138,599.94x = 14,333,152,479.74 - Step 5: Solve for x
x = 14,333,152,479.74/138,599.94 - Step 6: Final answer
x = 103,413.84
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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.