Finding the Fourth Proportional to 99,117.11, 136,781.74 and 53,795.09
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Solution
The fourth proportional to 99,117.11, 136,781.74 and 53,795.09 is: 74,237.30
Step by Step Solution
- Step 1: Write the proportion equation
99,117.11 : 136,781.74 = 53,795.09 : x - Step 2: Convert to fraction form
99,117.11/136,781.74 = 53,795.09/x - Step 3: Cross multiply
99,117.11x = 136,781.74 × 53,795.09 - Step 4: Simplify right side
99,117.11x = 7,358,186,013.66 - Step 5: Solve for x
x = 7,358,186,013.66/99,117.11 - Step 6: Final answer
x = 74,237.30
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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.