Finding the Fourth Proportional to 129,787.92, 179,106.99 and 72,426.63
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Solution
The fourth proportional to 129,787.92, 179,106.99 and 72,426.63 is: 99,948.55
Step by Step Solution
- Step 1: Write the proportion equation
129,787.92 : 179,106.99 = 72,426.63 : x - Step 2: Convert to fraction form
129,787.92/179,106.99 = 72,426.63/x - Step 3: Cross multiply
129,787.92x = 179,106.99 × 72,426.63 - Step 4: Simplify right side
129,787.92x = 12,972,114,437.48 - Step 5: Solve for x
x = 12,972,114,437.48/129,787.92 - Step 6: Final answer
x = 99,948.55
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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.