Finding the Fourth Proportional to 122,532,772.82, 169,095,253.12 and 66,778,206.44
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Solution
The fourth proportional to 122,532,772.82, 169,095,253.12 and 66,778,206.44 is: 92,153,939.39
Step by Step Solution
- Step 1: Write the proportion equation
122,532,772.82 : 169,095,253.12 = 66,778,206.44 : x - Step 2: Convert to fraction form
122,532,772.82/169,095,253.12 = 66,778,206.44/x - Step 3: Cross multiply
122,532,772.82x = 169,095,253.12 × 66,778,206.44 - Step 4: Simplify right side
122,532,772.82x = 11,291,877,719,858,994 - Step 5: Solve for x
x = 11,291,877,719,858,994/122,532,772.82 - Step 6: Final answer
x = 92,153,939.39
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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.