Finding the Fourth Proportional to 159,129.34, 219,595.62 and 87,509.56
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Solution
The fourth proportional to 159,129.34, 219,595.62 and 87,509.56 is: 120,761.61
Step by Step Solution
- Step 1: Write the proportion equation
159,129.34 : 219,595.62 = 87,509.56 : x - Step 2: Convert to fraction form
159,129.34/219,595.62 = 87,509.56/x - Step 3: Cross multiply
159,129.34x = 219,595.62 × 87,509.56 - Step 4: Simplify right side
159,129.34x = 19,216,716,084.13 - Step 5: Solve for x
x = 19,216,716,084.13/159,129.34 - Step 6: Final answer
x = 120,761.61
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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.