Finding the Fourth Proportional to 121,968.31, 182,972.99 and 42,003.09
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Solution
The fourth proportional to 121,968.31, 182,972.99 and 42,003.09 is: 63,011.70
Step by Step Solution
- Step 1: Write the proportion equation
121,968.31 : 182,972.99 = 42,003.09 : x - Step 2: Convert to fraction form
121,968.31/182,972.99 = 42,003.09/x - Step 3: Cross multiply
121,968.31x = 182,972.99 × 42,003.09 - Step 4: Simplify right side
121,968.31x = 7,685,430,966.54 - Step 5: Solve for x
x = 7,685,430,966.54/121,968.31 - Step 6: Final answer
x = 63,011.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.