Finding the Fourth Proportional to 106,721.31, 147,270.62 and 58,973.63
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Solution
The fourth proportional to 106,721.31, 147,270.62 and 58,973.63 is: 81,380.95
Step by Step Solution
- Step 1: Write the proportion equation
106,721.31 : 147,270.62 = 58,973.63 : x - Step 2: Convert to fraction form
106,721.31/147,270.62 = 58,973.63/x - Step 3: Cross multiply
106,721.31x = 147,270.62 × 58,973.63 - Step 4: Simplify right side
106,721.31x = 8,685,082,022.53 - Step 5: Solve for x
x = 8,685,082,022.53/106,721.31 - Step 6: Final answer
x = 81,380.95
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1.5x scale
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.