Finding the Fourth Proportional to 99,070.80, 148,419.36 and 76,775.19
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Solution
The fourth proportional to 99,070.80, 148,419.36 and 76,775.19 is: 115,017.99
Step by Step Solution
- Step 1: Write the proportion equation
99,070.80 : 148,419.36 = 76,775.19 : x - Step 2: Convert to fraction form
99,070.80/148,419.36 = 76,775.19/x - Step 3: Cross multiply
99,070.80x = 148,419.36 × 76,775.19 - Step 4: Simplify right side
99,070.80x = 11,394,924,563.68 - Step 5: Solve for x
x = 11,394,924,563.68/99,070.80 - Step 6: Final answer
x = 115,017.99
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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.