Finding the Fourth Proportional to 91,054,438.65, 136,581,657.98 and 81,488,500.65
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Solution
The fourth proportional to 91,054,438.65, 136,581,657.98 and 81,488,500.65 is: 122,232,750.98
Step by Step Solution
- Step 1: Write the proportion equation
91,054,438.65 : 136,581,657.98 = 81,488,500.65 : x - Step 2: Convert to fraction form
91,054,438.65/136,581,657.98 = 81,488,500.65/x - Step 3: Cross multiply
91,054,438.65x = 136,581,657.98 × 81,488,500.65 - Step 4: Simplify right side
91,054,438.65x = 11,129,834,524,673,866 - Step 5: Solve for x
x = 11,129,834,524,673,866/91,054,438.65 - Step 6: Final answer
x = 122,232,750.98
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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.