Finding the Fourth Proportional to 105,689.07, 145,846.29 and 63,270.99
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Solution
The fourth proportional to 105,689.07, 145,846.29 and 63,270.99 is: 87,311.20
Step by Step Solution
- Step 1: Write the proportion equation
105,689.07 : 145,846.29 = 63,270.99 : x - Step 2: Convert to fraction form
105,689.07/145,846.29 = 63,270.99/x - Step 3: Cross multiply
105,689.07x = 145,846.29 × 63,270.99 - Step 4: Simplify right side
105,689.07x = 9,227,839,156.13 - Step 5: Solve for x
x = 9,227,839,156.13/105,689.07 - Step 6: Final answer
x = 87,311.20
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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.