Finding the Fourth Proportional to 139,916.97, 193,087.80 and 76,258.26
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Solution
The fourth proportional to 139,916.97, 193,087.80 and 76,258.26 is: 105,237.70
Step by Step Solution
- Step 1: Write the proportion equation
139,916.97 : 193,087.80 = 76,258.26 : x - Step 2: Convert to fraction form
139,916.97/193,087.80 = 76,258.26/x - Step 3: Cross multiply
139,916.97x = 193,087.80 × 76,258.26 - Step 4: Simplify right side
139,916.97x = 14,724,539,655.23 - Step 5: Solve for x
x = 14,724,539,655.23/139,916.97 - Step 6: Final answer
x = 105,237.70
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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.