Finding the Fourth Proportional to 103,291.97, 142,557.21 and 57,972.65
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Solution
The fourth proportional to 103,291.97, 142,557.21 and 57,972.65 is: 80,010.28
Step by Step Solution
- Step 1: Write the proportion equation
103,291.97 : 142,557.21 = 57,972.65 : x - Step 2: Convert to fraction form
103,291.97/142,557.21 = 57,972.65/x - Step 3: Cross multiply
103,291.97x = 142,557.21 × 57,972.65 - Step 4: Simplify right side
103,291.97x = 8,264,418,527.52 - Step 5: Solve for x
x = 8,264,418,527.52/103,291.97 - Step 6: Final answer
x = 80,010.28
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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.