Finding the Fourth Proportional to 106,321.80, 146,587.64 and 87,132.08
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Solution
The fourth proportional to 106,321.80, 146,587.64 and 87,132.08 is: 120,130.45
Step by Step Solution
- Step 1: Write the proportion equation
106,321.80 : 146,587.64 = 87,132.08 : x - Step 2: Convert to fraction form
106,321.80/146,587.64 = 87,132.08/x - Step 3: Cross multiply
106,321.80x = 146,587.64 × 87,132.08 - Step 4: Simplify right side
106,321.80x = 12,772,485,975.49 - Step 5: Solve for x
x = 12,772,485,975.49/106,321.80 - Step 6: Final answer
x = 120,130.45
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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.