Finding the Fourth Proportional to 99,640.23, 148,799.89 and 87,567.99
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Solution
The fourth proportional to 99,640.23, 148,799.89 and 87,567.99 is: 130,771.55
Step by Step Solution
- Step 1: Write the proportion equation
99,640.23 : 148,799.89 = 87,567.99 : x - Step 2: Convert to fraction form
99,640.23/148,799.89 = 87,567.99/x - Step 3: Cross multiply
99,640.23x = 148,799.89 × 87,567.99 - Step 4: Simplify right side
99,640.23x = 13,030,106,338.41 - Step 5: Solve for x
x = 13,030,106,338.41/99,640.23 - Step 6: Final answer
x = 130,771.55
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.