Finding the Fourth Proportional to 122,397.23, 168,962.97 and 74,669.60
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Solution
The fourth proportional to 122,397.23, 168,962.97 and 74,669.60 is: 103,077.47
Step by Step Solution
- Step 1: Write the proportion equation
122,397.23 : 168,962.97 = 74,669.60 : x - Step 2: Convert to fraction form
122,397.23/168,962.97 = 74,669.60/x - Step 3: Cross multiply
122,397.23x = 168,962.97 × 74,669.60 - Step 4: Simplify right side
122,397.23x = 12,616,397,384.71 - Step 5: Solve for x
x = 12,616,397,384.71/122,397.23 - Step 6: Final answer
x = 103,077.47
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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.