Finding the Fourth Proportional to 98,869.36, 148,238.42 and 69,322.99
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Solution
The fourth proportional to 98,869.36, 148,238.42 and 69,322.99 is: 103,938.47
Step by Step Solution
- Step 1: Write the proportion equation
98,869.36 : 148,238.42 = 69,322.99 : x - Step 2: Convert to fraction form
98,869.36/148,238.42 = 69,322.99/x - Step 3: Cross multiply
98,869.36x = 148,238.42 × 69,322.99 - Step 4: Simplify right side
98,869.36x = 10,276,329,766.08 - Step 5: Solve for x
x = 10,276,329,766.08/98,869.36 - Step 6: Final answer
x = 103,938.47
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.