Finding the Fourth Proportional to 99,642.23, 148,802.87 and 87,569.99
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Solution
The fourth proportional to 99,642.23, 148,802.87 and 87,569.99 is: 130,774.53
Step by Step Solution
- Step 1: Write the proportion equation
99,642.23 : 148,802.87 = 87,569.99 : x - Step 2: Convert to fraction form
99,642.23/148,802.87 = 87,569.99/x - Step 3: Cross multiply
99,642.23x = 148,802.87 × 87,569.99 - Step 4: Simplify right side
99,642.23x = 13,030,665,837.87 - Step 5: Solve for x
x = 13,030,665,837.87/99,642.23 - Step 6: Final answer
x = 130,774.53
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.