Finding the Fourth Proportional to 158,750.10, 219,074.90 and 87,130.31
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Solution
The fourth proportional to 158,750.10, 219,074.90 and 87,130.31 is: 120,239.69
Step by Step Solution
- Step 1: Write the proportion equation
158,750.10 : 219,074.90 = 87,130.31 : x - Step 2: Convert to fraction form
158,750.10/219,074.90 = 87,130.31/x - Step 3: Cross multiply
158,750.10x = 219,074.90 × 87,130.31 - Step 4: Simplify right side
158,750.10x = 19,088,062,419.19 - Step 5: Solve for x
x = 19,088,062,419.19/158,750.10 - Step 6: Final answer
x = 120,239.69
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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.