Finding the Fourth Proportional to 159,865.84, 220,617.57 and 87,272.48
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Solution
The fourth proportional to 159,865.84, 220,617.57 and 87,272.48 is: 120,437.50
Step by Step Solution
- Step 1: Write the proportion equation
159,865.84 : 220,617.57 = 87,272.48 : x - Step 2: Convert to fraction form
159,865.84/220,617.57 = 87,272.48/x - Step 3: Cross multiply
159,865.84x = 220,617.57 × 87,272.48 - Step 4: Simplify right side
159,865.84x = 19,253,842,465.47 - Step 5: Solve for x
x = 19,253,842,465.47/159,865.84 - Step 6: Final answer
x = 120,437.50
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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.