Finding the Fourth Proportional to 261,112,129,867.60, 391,847,103,328.24 and 91,131,718,854.49
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Solution
The fourth proportional to 261,112,129,867.60, 391,847,103,328.24 and 91,131,718,854.49 is: 136,760,019,814.33
Step by Step Solution
- Step 1: Write the proportion equation
261,112,129,867.60 : 391,847,103,328.24 = 91,131,718,854.49 : x - Step 2: Convert to fraction form
261,112,129,867.60/391,847,103,328.24 = 91,131,718,854.49/x - Step 3: Cross multiply
261,112,129,867.60x = 391,847,103,328.24 × 91,131,718,854.49 - Step 4: Simplify right side
261,112,129,867.60x = 35,709,700,054,455,460,823,040 - Step 5: Solve for x
x = 35,709,700,054,455,460,823,040/261,112,129,867.60 - Step 6: Final answer
x = 136,760,019,814.33
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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.