Finding the Fourth Proportional to 124,523.78, 171,790.80 and 81,513.80
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Solution
The fourth proportional to 124,523.78, 171,790.80 and 81,513.80 is: 112,454.99
Step by Step Solution
- Step 1: Write the proportion equation
124,523.78 : 171,790.80 = 81,513.80 : x - Step 2: Convert to fraction form
124,523.78/171,790.80 = 81,513.80/x - Step 3: Cross multiply
124,523.78x = 171,790.80 × 81,513.80 - Step 4: Simplify right side
124,523.78x = 14,003,320,054.09 - Step 5: Solve for x
x = 14,003,320,054.09/124,523.78 - Step 6: Final answer
x = 112,454.99
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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.