Finding the Fourth Proportional to 122,417.43, 168,939.08 and 68,706.53
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Solution
The fourth proportional to 122,417.43, 168,939.08 and 68,706.53 is: 94,816.71
Step by Step Solution
- Step 1: Write the proportion equation
122,417.43 : 168,939.08 = 68,706.53 : x - Step 2: Convert to fraction form
122,417.43/168,939.08 = 68,706.53/x - Step 3: Cross multiply
122,417.43x = 168,939.08 × 68,706.53 - Step 4: Simplify right side
122,417.43x = 11,607,217,968.19 - Step 5: Solve for x
x = 11,607,217,968.19/122,417.43 - Step 6: Final answer
x = 94,816.71
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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.