Finding the Fourth Proportional to 99,841,138.20, 137,778,127.47 and 55,788,498.99
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Solution
The fourth proportional to 99,841,138.20, 137,778,127.47 and 55,788,498.99 is: 76,986,651.63
Step by Step Solution
- Step 1: Write the proportion equation
99,841,138.20 : 137,778,127.47 = 55,788,498.99 : x - Step 2: Convert to fraction form
99,841,138.20/137,778,127.47 = 55,788,498.99/x - Step 3: Cross multiply
99,841,138.20x = 137,778,127.47 × 55,788,498.99 - Step 4: Simplify right side
99,841,138.20x = 7,686,434,925,204,186 - Step 5: Solve for x
x = 7,686,434,925,204,186/99,841,138.20 - Step 6: Final answer
x = 76,986,651.63
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.