Finding the Fourth Proportional to 103,699.09, 143,118.66 and 58,386.07
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Solution
The fourth proportional to 103,699.09, 143,118.66 and 58,386.07 is: 80,580.61
Step by Step Solution
- Step 1: Write the proportion equation
103,699.09 : 143,118.66 = 58,386.07 : x - Step 2: Convert to fraction form
103,699.09/143,118.66 = 58,386.07/x - Step 3: Cross multiply
103,699.09x = 143,118.66 × 58,386.07 - Step 4: Simplify right side
103,699.09x = 8,356,136,101.07 - Step 5: Solve for x
x = 8,356,136,101.07/103,699.09 - Step 6: Final answer
x = 80,580.61
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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.