Finding the Fourth Proportional to 100,347,722.10, 138,539,219.13 and 63,209,837.70
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Solution
The fourth proportional to 100,347,722.10, 138,539,219.13 and 63,209,837.70 is: 87,266,969.03
Step by Step Solution
- Step 1: Write the proportion equation
100,347,722.10 : 138,539,219.13 = 63,209,837.70 : x - Step 2: Convert to fraction form
100,347,722.10/138,539,219.13 = 63,209,837.70/x - Step 3: Cross multiply
100,347,722.10x = 138,539,219.13 × 63,209,837.70 - Step 4: Simplify right side
100,347,722.10x = 8,757,041,556,292,035 - Step 5: Solve for x
x = 8,757,041,556,292,035/100,347,722.10 - Step 6: Final answer
x = 87,266,969.03
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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.