Finding the Fourth Proportional to 157,112.24, 216,811.35 and 85,492.44
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Solution
The fourth proportional to 157,112.24, 216,811.35 and 85,492.44 is: 117,977.64
Step by Step Solution
- Step 1: Write the proportion equation
157,112.24 : 216,811.35 = 85,492.44 : x - Step 2: Convert to fraction form
157,112.24/216,811.35 = 85,492.44/x - Step 3: Cross multiply
157,112.24x = 216,811.35 × 85,492.44 - Step 4: Simplify right side
157,112.24x = 18,535,731,331.19 - Step 5: Solve for x
x = 18,535,731,331.19/157,112.24 - Step 6: Final answer
x = 117,977.64
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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.