Finding the Fourth Proportional to 157,414,365.47, 217,232,578.92 and 86,849,972.12
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Solution
The fourth proportional to 157,414,365.47, 217,232,578.92 and 86,849,972.12 is: 119,853,377.84
Step by Step Solution
- Step 1: Write the proportion equation
157,414,365.47 : 217,232,578.92 = 86,849,972.12 : x - Step 2: Convert to fraction form
157,414,365.47/217,232,578.92 = 86,849,972.12/x - Step 3: Cross multiply
157,414,365.47x = 217,232,578.92 × 86,849,972.12 - Step 4: Simplify right side
157,414,365.47x = 18,866,643,422,214,620 - Step 5: Solve for x
x = 18,866,643,422,214,620/157,414,365.47 - Step 6: Final answer
x = 119,853,377.84
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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.