Finding the Fourth Proportional to 156,729.10, 235,133.43 and 72,549.99
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Solution
The fourth proportional to 156,729.10, 235,133.43 and 72,549.99 is: 108,843.40
Step by Step Solution
- Step 1: Write the proportion equation
156,729.10 : 235,133.43 = 72,549.99 : x - Step 2: Convert to fraction form
156,729.10/235,133.43 = 72,549.99/x - Step 3: Cross multiply
156,729.10x = 235,133.43 × 72,549.99 - Step 4: Simplify right side
156,729.10x = 17,058,927,995.17 - Step 5: Solve for x
x = 17,058,927,995.17/156,729.10 - Step 6: Final answer
x = 108,843.40
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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.