Finding the Fourth Proportional to 153,829.44, 212,284.80 and 86,761.44
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Solution
The fourth proportional to 153,829.44, 212,284.80 and 86,761.44 is: 119,730.88
Step by Step Solution
- Step 1: Write the proportion equation
153,829.44 : 212,284.80 = 86,761.44 : x - Step 2: Convert to fraction form
153,829.44/212,284.80 = 86,761.44/x - Step 3: Cross multiply
153,829.44x = 212,284.80 × 86,761.44 - Step 4: Simplify right side
153,829.44x = 18,418,134,938.11 - Step 5: Solve for x
x = 18,418,134,938.11/153,829.44 - Step 6: Final answer
x = 119,730.88
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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.