Finding the Fourth Proportional to 99,294.07, 137,020.12 and 53,971.68
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Solution
The fourth proportional to 99,294.07, 137,020.12 and 53,971.68 is: 74,477.82
Step by Step Solution
- Step 1: Write the proportion equation
99,294.07 : 137,020.12 = 53,971.68 : x - Step 2: Convert to fraction form
99,294.07/137,020.12 = 53,971.68/x - Step 3: Cross multiply
99,294.07x = 137,020.12 × 53,971.68 - Step 4: Simplify right side
99,294.07x = 7,395,206,070.20 - Step 5: Solve for x
x = 7,395,206,070.20/99,294.07 - Step 6: Final answer
x = 74,477.82
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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.