Finding the Fourth Proportional to 153,867.31, 212,449.37 and 99,451.68
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Solution
The fourth proportional to 153,867.31, 212,449.37 and 99,451.68 is: 137,316.02
Step by Step Solution
- Step 1: Write the proportion equation
153,867.31 : 212,449.37 = 99,451.68 : x - Step 2: Convert to fraction form
153,867.31/212,449.37 = 99,451.68/x - Step 3: Cross multiply
153,867.31x = 212,449.37 × 99,451.68 - Step 4: Simplify right side
153,867.31x = 21,128,446,761.44 - Step 5: Solve for x
x = 21,128,446,761.44/153,867.31 - Step 6: Final answer
x = 137,316.02
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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.