Finding the Fourth Proportional to 155,419.06, 214,477.97 and 87,436.08
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Solution
The fourth proportional to 155,419.06, 214,477.97 and 87,436.08 is: 120,661.60
Step by Step Solution
- Step 1: Write the proportion equation
155,419.06 : 214,477.97 = 87,436.08 : x - Step 2: Convert to fraction form
155,419.06/214,477.97 = 87,436.08/x - Step 3: Cross multiply
155,419.06x = 214,477.97 × 87,436.08 - Step 4: Simplify right side
155,419.06x = 18,753,112,943.16 - Step 5: Solve for x
x = 18,753,112,943.16/155,419.06 - Step 6: Final answer
x = 120,661.60
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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.