Finding the Fourth Proportional to 122,926.21, 169,643.40 and 68,478.31
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Solution
The fourth proportional to 122,926.21, 169,643.40 and 68,478.31 is: 94,502.98
Step by Step Solution
- Step 1: Write the proportion equation
122,926.21 : 169,643.40 = 68,478.31 : x - Step 2: Convert to fraction form
122,926.21/169,643.40 = 68,478.31/x - Step 3: Cross multiply
122,926.21x = 169,643.40 × 68,478.31 - Step 4: Simplify right side
122,926.21x = 11,616,893,418.31 - Step 5: Solve for x
x = 11,616,893,418.31/122,926.21 - Step 6: Final answer
x = 94,502.98
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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.