Finding the Fourth Proportional to 131,122,338.96, 180,949,405.71 and 72,385,486.74
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Solution
The fourth proportional to 131,122,338.96, 180,949,405.71 and 72,385,486.74 is: 99,892,290.75
Step by Step Solution
- Step 1: Write the proportion equation
131,122,338.96 : 180,949,405.71 = 72,385,486.74 : x - Step 2: Convert to fraction form
131,122,338.96/180,949,405.71 = 72,385,486.74/x - Step 3: Cross multiply
131,122,338.96x = 180,949,405.71 × 72,385,486.74 - Step 4: Simplify right side
131,122,338.96x = 13,098,110,806,852,380 - Step 5: Solve for x
x = 13,098,110,806,852,380/131,122,338.96 - Step 6: Final answer
x = 99,892,290.75
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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.