Finding the Fourth Proportional to 163,312.12, 225,395.49 and 99,686.89
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Solution
The fourth proportional to 163,312.12, 225,395.49 and 99,686.89 is: 137,583.02
Step by Step Solution
- Step 1: Write the proportion equation
163,312.12 : 225,395.49 = 99,686.89 : x - Step 2: Convert to fraction form
163,312.12/225,395.49 = 99,686.89/x - Step 3: Cross multiply
163,312.12x = 225,395.49 × 99,686.89 - Step 4: Simplify right side
163,312.12x = 22,468,975,418.13 - Step 5: Solve for x
x = 22,468,975,418.13/163,312.12 - Step 6: Final answer
x = 137,583.02
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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.