Finding the Fourth Proportional to 103,026.06, 142,190.34 and 74,438.19
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Solution
The fourth proportional to 103,026.06, 142,190.34 and 74,438.19 is: 102,735.09
Step by Step Solution
- Step 1: Write the proportion equation
103,026.06 : 142,190.34 = 74,438.19 : x - Step 2: Convert to fraction form
103,026.06/142,190.34 = 74,438.19/x - Step 3: Cross multiply
103,026.06x = 142,190.34 × 74,438.19 - Step 4: Simplify right side
103,026.06x = 10,584,391,265.94 - Step 5: Solve for x
x = 10,584,391,265.94/103,026.06 - Step 6: Final answer
x = 102,735.09
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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.