Finding the Fourth Proportional to 122,118.05, 168,518.01 and 68,400.32
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Solution
The fourth proportional to 122,118.05, 168,518.01 and 68,400.32 is: 94,389.69
Step by Step Solution
- Step 1: Write the proportion equation
122,118.05 : 168,518.01 = 68,400.32 : x - Step 2: Convert to fraction form
122,118.05/168,518.01 = 68,400.32/x - Step 3: Cross multiply
122,118.05x = 168,518.01 × 68,400.32 - Step 4: Simplify right side
122,118.05x = 11,526,684,967.17 - Step 5: Solve for x
x = 11,526,684,967.17/122,118.05 - Step 6: Final answer
x = 94,389.69
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1.5x scale
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.