Finding the Fourth Proportional to 115,133.19, 172,739.01 and 70,244.42
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Solution
The fourth proportional to 115,133.19, 172,739.01 and 70,244.42 is: 105,390.55
Step by Step Solution
- Step 1: Write the proportion equation
115,133.19 : 172,739.01 = 70,244.42 : x - Step 2: Convert to fraction form
115,133.19/172,739.01 = 70,244.42/x - Step 3: Cross multiply
115,133.19x = 172,739.01 × 70,244.42 - Step 4: Simplify right side
115,133.19x = 12,133,950,705.13 - Step 5: Solve for x
x = 12,133,950,705.13/115,133.19 - Step 6: Final answer
x = 105,390.55
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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.