Finding the Fourth Proportional to 101,990.88, 140,708.08 and 75,197.12
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Solution
The fourth proportional to 101,990.88, 140,708.08 and 75,197.12 is: 103,743.02
Step by Step Solution
- Step 1: Write the proportion equation
101,990.88 : 140,708.08 = 75,197.12 : x - Step 2: Convert to fraction form
101,990.88/140,708.08 = 75,197.12/x - Step 3: Cross multiply
101,990.88x = 140,708.08 × 75,197.12 - Step 4: Simplify right side
101,990.88x = 10,580,842,376.73 - Step 5: Solve for x
x = 10,580,842,376.73/101,990.88 - Step 6: Final answer
x = 103,743.02
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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.