Finding the Fourth Proportional to 112,354,838.70, 168,532,258.05 and 78,314,621.10
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Solution
The fourth proportional to 112,354,838.70, 168,532,258.05 and 78,314,621.10 is: 117,471,931.65
Step by Step Solution
- Step 1: Write the proportion equation
112,354,838.70 : 168,532,258.05 = 78,314,621.10 : x - Step 2: Convert to fraction form
112,354,838.70/168,532,258.05 = 78,314,621.10/x - Step 3: Cross multiply
112,354,838.70x = 168,532,258.05 × 78,314,621.10 - Step 4: Simplify right side
112,354,838.70x = 13,198,539,932,313,174 - Step 5: Solve for x
x = 13,198,539,932,313,174/112,354,838.70 - Step 6: Final answer
x = 117,471,931.65
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.