Finding the Fourth Proportional to 139,660.20, 209,490.30 and 97,669.80
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Solution
The fourth proportional to 139,660.20, 209,490.30 and 97,669.80 is: 146,504.70
Step by Step Solution
- Step 1: Write the proportion equation
139,660.20 : 209,490.30 = 97,669.80 : x - Step 2: Convert to fraction form
139,660.20/209,490.30 = 97,669.80/x - Step 3: Cross multiply
139,660.20x = 209,490.30 × 97,669.80 - Step 4: Simplify right side
139,660.20x = 20,460,875,702.94 - Step 5: Solve for x
x = 20,460,875,702.94/139,660.20 - Step 6: Final answer
x = 146,504.70
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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.