Finding the Fourth Proportional to 115,135.44, 172,742.38 and 70,246.68
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Solution
The fourth proportional to 115,135.44, 172,742.38 and 70,246.68 is: 105,393.95
Step by Step Solution
- Step 1: Write the proportion equation
115,135.44 : 172,742.38 = 70,246.68 : x - Step 2: Convert to fraction form
115,135.44/172,742.38 = 70,246.68/x - Step 3: Cross multiply
115,135.44x = 172,742.38 × 70,246.68 - Step 4: Simplify right side
115,135.44x = 12,134,578,690.30 - Step 5: Solve for x
x = 12,134,578,690.30/115,135.44 - Step 6: Final answer
x = 105,393.95
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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.