Finding the Fourth Proportional to 102,570.26, 153,349.62 and 86,949.60
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Solution
The fourth proportional to 102,570.26, 153,349.62 and 86,949.60 is: 129,995.65
Step by Step Solution
- Step 1: Write the proportion equation
102,570.26 : 153,349.62 = 86,949.60 : x - Step 2: Convert to fraction form
102,570.26/153,349.62 = 86,949.60/x - Step 3: Cross multiply
102,570.26x = 153,349.62 × 86,949.60 - Step 4: Simplify right side
102,570.26x = 13,333,688,119.15 - Step 5: Solve for x
x = 13,333,688,119.15/102,570.26 - Step 6: Final answer
x = 129,995.65
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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.