Finding the Fourth Proportional to 128,295,984.22, 177,194,596.17 and 86,971,132.06
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Solution
The fourth proportional to 128,295,984.22, 177,194,596.17 and 86,971,132.06 is: 120,119,228.34
Step by Step Solution
- Step 1: Write the proportion equation
128,295,984.22 : 177,194,596.17 = 86,971,132.06 : x - Step 2: Convert to fraction form
128,295,984.22/177,194,596.17 = 86,971,132.06/x - Step 3: Cross multiply
128,295,984.22x = 177,194,596.17 × 86,971,132.06 - Step 4: Simplify right side
128,295,984.22x = 15,410,814,623,702,598 - Step 5: Solve for x
x = 15,410,814,623,702,598/128,295,984.22 - Step 6: Final answer
x = 120,119,228.34
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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.