Finding the Fourth Proportional to 108,083.79, 149,112.77 and 72,216.99
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Solution
The fourth proportional to 108,083.79, 149,112.77 and 72,216.99 is: 99,630.81
Step by Step Solution
- Step 1: Write the proportion equation
108,083.79 : 149,112.77 = 72,216.99 : x - Step 2: Convert to fraction form
108,083.79/149,112.77 = 72,216.99/x - Step 3: Cross multiply
108,083.79x = 149,112.77 × 72,216.99 - Step 4: Simplify right side
108,083.79x = 10,768,475,058.88 - Step 5: Solve for x
x = 10,768,475,058.88/108,083.79 - Step 6: Final answer
x = 99,630.81
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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.