Finding the Fourth Proportional to 122,457.07, 168,990.68 and 68,742.19
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Solution
The fourth proportional to 122,457.07, 168,990.68 and 68,742.19 is: 94,864.18
Step by Step Solution
- Step 1: Write the proportion equation
122,457.07 : 168,990.68 = 68,742.19 : x - Step 2: Convert to fraction form
122,457.07/168,990.68 = 68,742.19/x - Step 3: Cross multiply
122,457.07x = 168,990.68 × 68,742.19 - Step 4: Simplify right side
122,457.07x = 11,616,789,089.08 - Step 5: Solve for x
x = 11,616,789,089.08/122,457.07 - Step 6: Final answer
x = 94,864.18
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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.