Finding the Fourth Proportional to 140,053.92, 193,369.05 and 107,731.14
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Solution
The fourth proportional to 140,053.92, 193,369.05 and 107,731.14 is: 148,741.77
Step by Step Solution
- Step 1: Write the proportion equation
140,053.92 : 193,369.05 = 107,731.14 : x - Step 2: Convert to fraction form
140,053.92/193,369.05 = 107,731.14/x - Step 3: Cross multiply
140,053.92x = 193,369.05 × 107,731.14 - Step 4: Simplify right side
140,053.92x = 20,831,868,197.22 - Step 5: Solve for x
x = 20,831,868,197.22/140,053.92 - Step 6: Final answer
x = 148,741.77
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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.