Finding the Fourth Proportional to 153,866.31, 212,447.99 and 99,450.68
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Solution
The fourth proportional to 153,866.31, 212,447.99 and 99,450.68 is: 137,314.63
Step by Step Solution
- Step 1: Write the proportion equation
153,866.31 : 212,447.99 = 99,450.68 : x - Step 2: Convert to fraction form
153,866.31/212,447.99 = 99,450.68/x - Step 3: Cross multiply
153,866.31x = 212,447.99 × 99,450.68 - Step 4: Simplify right side
153,866.31x = 21,128,095,510.64 - Step 5: Solve for x
x = 21,128,095,510.64/153,866.31 - Step 6: Final answer
x = 137,314.63
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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.