Finding the Fourth Proportional to 115,425.12, 159,161.10 and 75,064.08
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Solution
The fourth proportional to 115,425.12, 159,161.10 and 75,064.08 is: 103,506.77
Step by Step Solution
- Step 1: Write the proportion equation
115,425.12 : 159,161.10 = 75,064.08 : x - Step 2: Convert to fraction form
115,425.12/159,161.10 = 75,064.08/x - Step 3: Cross multiply
115,425.12x = 159,161.10 × 75,064.08 - Step 4: Simplify right side
115,425.12x = 11,947,281,543.29 - Step 5: Solve for x
x = 11,947,281,543.29/115,425.12 - Step 6: Final answer
x = 103,506.77
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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.