Finding the Fourth Proportional to 103,804.74, 143,242.97 and 61,355.07
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Solution
The fourth proportional to 103,804.74, 143,242.97 and 61,355.07 is: 84,665.52
Step by Step Solution
- Step 1: Write the proportion equation
103,804.74 : 143,242.97 = 61,355.07 : x - Step 2: Convert to fraction form
103,804.74/143,242.97 = 61,355.07/x - Step 3: Cross multiply
103,804.74x = 143,242.97 × 61,355.07 - Step 4: Simplify right side
103,804.74x = 8,788,682,144.58 - Step 5: Solve for x
x = 8,788,682,144.58/103,804.74 - Step 6: Final answer
x = 84,665.52
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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.