Finding the Fourth Proportional to 99,664,381.80, 149,496,572.70 and 74,155,213.80
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Solution
The fourth proportional to 99,664,381.80, 149,496,572.70 and 74,155,213.80 is: 111,232,820.70
Step by Step Solution
- Step 1: Write the proportion equation
99,664,381.80 : 149,496,572.70 = 74,155,213.80 : x - Step 2: Convert to fraction form
99,664,381.80/149,496,572.70 = 74,155,213.80/x - Step 3: Cross multiply
99,664,381.80x = 149,496,572.70 × 74,155,213.80 - Step 4: Simplify right side
99,664,381.80x = 11,085,950,310,935,742 - Step 5: Solve for x
x = 11,085,950,310,935,742/99,664,381.80 - Step 6: Final answer
x = 111,232,820.70
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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.