Finding the Fourth Proportional to 142,319.30, 213,513.99 and 100,281.49
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Solution
The fourth proportional to 142,319.30, 213,513.99 and 100,281.49 is: 150,446.92
Step by Step Solution
- Step 1: Write the proportion equation
142,319.30 : 213,513.99 = 100,281.49 : x - Step 2: Convert to fraction form
142,319.30/213,513.99 = 100,281.49/x - Step 3: Cross multiply
142,319.30x = 213,513.99 × 100,281.49 - Step 4: Simplify right side
142,319.30x = 21,411,501,053.05 - Step 5: Solve for x
x = 21,411,501,053.05/142,319.30 - Step 6: Final answer
x = 150,446.92
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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.