Finding the Fourth Proportional to 155,963,576.09, 215,244,173.97 and 86,348,957.67
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Solution
The fourth proportional to 155,963,576.09, 215,244,173.97 and 86,348,957.67 is: 119,169,555.69
Step by Step Solution
- Step 1: Write the proportion equation
155,963,576.09 : 215,244,173.97 = 86,348,957.67 : x - Step 2: Convert to fraction form
155,963,576.09/215,244,173.97 = 86,348,957.67/x - Step 3: Cross multiply
155,963,576.09x = 215,244,173.97 × 86,348,957.67 - Step 4: Simplify right side
155,963,576.09x = 18,586,110,066,849,648 - Step 5: Solve for x
x = 18,586,110,066,849,648/155,963,576.09 - Step 6: Final answer
x = 119,169,555.69
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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.