Finding the Fourth Proportional to 163,128,174.23, 225,121,752.34 and 100,440,437.08
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Solution
The fourth proportional to 163,128,174.23, 225,121,752.34 and 100,440,437.08 is: 138,610,802.87
Step by Step Solution
- Step 1: Write the proportion equation
163,128,174.23 : 225,121,752.34 = 100,440,437.08 : x - Step 2: Convert to fraction form
163,128,174.23/225,121,752.34 = 100,440,437.08/x - Step 3: Cross multiply
163,128,174.23x = 225,121,752.34 × 100,440,437.08 - Step 4: Simplify right side
163,128,174.23x = 22,611,327,201,245,112 - Step 5: Solve for x
x = 22,611,327,201,245,112/163,128,174.23 - Step 6: Final answer
x = 138,610,802.87
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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.