Finding the Fourth Proportional to 107,969.13, 148,957.23 and 62,621.68
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Solution
The fourth proportional to 107,969.13, 148,957.23 and 62,621.68 is: 86,394.62
Step by Step Solution
- Step 1: Write the proportion equation
107,969.13 : 148,957.23 = 62,621.68 : x - Step 2: Convert to fraction form
107,969.13/148,957.23 = 62,621.68/x - Step 3: Cross multiply
107,969.13x = 148,957.23 × 62,621.68 - Step 4: Simplify right side
107,969.13x = 9,327,951,990.75 - Step 5: Solve for x
x = 9,327,951,990.75/107,969.13 - Step 6: Final answer
x = 86,394.62
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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.