Finding the Fourth Proportional to 153,365.05, 211,638.58 and 86,284.09
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Solution
The fourth proportional to 153,365.05, 211,638.58 and 86,284.09 is: 119,069.12
Step by Step Solution
- Step 1: Write the proportion equation
153,365.05 : 211,638.58 = 86,284.09 : x - Step 2: Convert to fraction form
153,365.05/211,638.58 = 86,284.09/x - Step 3: Cross multiply
153,365.05x = 211,638.58 × 86,284.09 - Step 4: Simplify right side
153,365.05x = 18,261,042,284.19 - Step 5: Solve for x
x = 18,261,042,284.19/153,365.05 - Step 6: Final answer
x = 119,069.12
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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.