Finding the Fourth Proportional to 118,436,832.06, 163,430,245.35 and 65,505,128.49
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Solution
The fourth proportional to 118,436,832.06, 163,430,245.35 and 65,505,128.49 is: 90,390,117.96
Step by Step Solution
- Step 1: Write the proportion equation
118,436,832.06 : 163,430,245.35 = 65,505,128.49 : x - Step 2: Convert to fraction form
118,436,832.06/163,430,245.35 = 65,505,128.49/x - Step 3: Cross multiply
118,436,832.06x = 163,430,245.35 × 65,505,128.49 - Step 4: Simplify right side
118,436,832.06x = 10,705,519,220,803,974 - Step 5: Solve for x
x = 10,705,519,220,803,974/118,436,832.06 - Step 6: Final answer
x = 90,390,117.96
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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.