Finding the Fourth Proportional to 105,329.26, 145,430.49 and 65,098.18
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Solution
The fourth proportional to 105,329.26, 145,430.49 and 65,098.18 is: 89,882.53
Step by Step Solution
- Step 1: Write the proportion equation
105,329.26 : 145,430.49 = 65,098.18 : x - Step 2: Convert to fraction form
105,329.26/145,430.49 = 65,098.18/x - Step 3: Cross multiply
105,329.26x = 145,430.49 × 65,098.18 - Step 4: Simplify right side
105,329.26x = 9,467,260,275.24 - Step 5: Solve for x
x = 9,467,260,275.24/105,329.26 - Step 6: Final answer
x = 89,882.53
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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.