Finding the Fourth Proportional to 100,236,799.67, 138,327,090.95 and 55,585,915.70
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Solution
The fourth proportional to 100,236,799.67, 138,327,090.95 and 55,585,915.70 is: 76,708,734.14
Step by Step Solution
- Step 1: Write the proportion equation
100,236,799.67 : 138,327,090.95 = 55,585,915.70 : x - Step 2: Convert to fraction form
100,236,799.67/138,327,090.95 = 55,585,915.70/x - Step 3: Cross multiply
100,236,799.67x = 138,327,090.95 × 55,585,915.70 - Step 4: Simplify right side
100,236,799.67x = 7,689,038,016,640,821 - Step 5: Solve for x
x = 7,689,038,016,640,821/100,236,799.67 - Step 6: Final answer
x = 76,708,734.14
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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.