Finding the Fourth Proportional to 139,955.38, 193,138.43 and 76,293.23
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Solution
The fourth proportional to 139,955.38, 193,138.43 and 76,293.23 is: 105,284.65
Step by Step Solution
- Step 1: Write the proportion equation
139,955.38 : 193,138.43 = 76,293.23 : x - Step 2: Convert to fraction form
139,955.38/193,138.43 = 76,293.23/x - Step 3: Cross multiply
139,955.38x = 193,138.43 × 76,293.23 - Step 4: Simplify right side
139,955.38x = 14,735,153,314.67 - Step 5: Solve for x
x = 14,735,153,314.67/139,955.38 - Step 6: Final answer
x = 105,284.65
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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.