Finding the Fourth Proportional to 129,374,320.60, 193,965,763.20 and 61,137,296.20
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Solution
The fourth proportional to 129,374,320.60, 193,965,763.20 and 61,137,296.20 is: 91,660,711.82
Step by Step Solution
- Step 1: Write the proportion equation
129,374,320.60 : 193,965,763.20 = 61,137,296.20 : x - Step 2: Convert to fraction form
129,374,320.60/193,965,763.20 = 61,137,296.20/x - Step 3: Cross multiply
129,374,320.60x = 193,965,763.20 × 61,137,296.20 - Step 4: Simplify right side
129,374,320.60x = 11,858,542,317,417,460 - Step 5: Solve for x
x = 11,858,542,317,417,460/129,374,320.60 - Step 6: Final answer
x = 91,660,711.82
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.