Finding the Fourth Proportional to 122,398.23, 168,964.35 and 74,670.60
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Solution
The fourth proportional to 122,398.23, 168,964.35 and 74,670.60 is: 103,078.85
Step by Step Solution
- Step 1: Write the proportion equation
122,398.23 : 168,964.35 = 74,670.60 : x - Step 2: Convert to fraction form
122,398.23/168,964.35 = 74,670.60/x - Step 3: Cross multiply
122,398.23x = 168,964.35 × 74,670.60 - Step 4: Simplify right side
122,398.23x = 12,616,669,393.11 - Step 5: Solve for x
x = 12,616,669,393.11/122,398.23 - Step 6: Final answer
x = 103,078.85
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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.