Finding the Fourth Proportional to 145,878.12, 218,656.80 and 57,115.08
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Solution
The fourth proportional to 145,878.12, 218,656.80 and 57,115.08 is: 85,609.83
Step by Step Solution
- Step 1: Write the proportion equation
145,878.12 : 218,656.80 = 57,115.08 : x - Step 2: Convert to fraction form
145,878.12/218,656.80 = 57,115.08/x - Step 3: Cross multiply
145,878.12x = 218,656.80 × 57,115.08 - Step 4: Simplify right side
145,878.12x = 12,488,600,624.54 - Step 5: Solve for x
x = 12,488,600,624.54/145,878.12 - Step 6: Final answer
x = 85,609.83
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.