Finding the Fourth Proportional to 130,957.91, 180,723.17 and 74,369.69
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Solution
The fourth proportional to 130,957.91, 180,723.17 and 74,369.69 is: 102,630.88
Step by Step Solution
- Step 1: Write the proportion equation
130,957.91 : 180,723.17 = 74,369.69 : x - Step 2: Convert to fraction form
130,957.91/180,723.17 = 74,369.69/x - Step 3: Cross multiply
130,957.91x = 180,723.17 × 74,369.69 - Step 4: Simplify right side
130,957.91x = 13,440,325,411.03 - Step 5: Solve for x
x = 13,440,325,411.03/130,957.91 - Step 6: Final answer
x = 102,630.88
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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.