Finding the Fourth Proportional to 139,928,770.08, 193,163,621.76 and 90,393,297.12
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Solution
The fourth proportional to 139,928,770.08, 193,163,621.76 and 90,393,297.12 is: 124,782,749.43
Step by Step Solution
- Step 1: Write the proportion equation
139,928,770.08 : 193,163,621.76 = 90,393,297.12 : x - Step 2: Convert to fraction form
139,928,770.08/193,163,621.76 = 90,393,297.12/x - Step 3: Cross multiply
139,928,770.08x = 193,163,621.76 × 90,393,297.12 - Step 4: Simplify right side
139,928,770.08x = 17,460,696,654,526,978 - Step 5: Solve for x
x = 17,460,696,654,526,978/139,928,770.08 - Step 6: Final answer
x = 124,782,749.43
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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.