Finding the Fourth Proportional to 155,313.21, 214,349.88 and 86,409.49
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Solution
The fourth proportional to 155,313.21, 214,349.88 and 86,409.49 is: 119,254.92
Step by Step Solution
- Step 1: Write the proportion equation
155,313.21 : 214,349.88 = 86,409.49 : x - Step 2: Convert to fraction form
155,313.21/214,349.88 = 86,409.49/x - Step 3: Cross multiply
155,313.21x = 214,349.88 × 86,409.49 - Step 4: Simplify right side
155,313.21x = 18,521,864,024.20 - Step 5: Solve for x
x = 18,521,864,024.20/155,313.21 - Step 6: Final answer
x = 119,254.92
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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.