Finding the Fourth Proportional to 128,259,916.21, 176,993,942.40 and 69,521,320.15
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Solution
The fourth proportional to 128,259,916.21, 176,993,942.40 and 69,521,320.15 is: 95,936,851.50
Step by Step Solution
- Step 1: Write the proportion equation
128,259,916.21 : 176,993,942.40 = 69,521,320.15 : x - Step 2: Convert to fraction form
128,259,916.21/176,993,942.40 = 69,521,320.15/x - Step 3: Cross multiply
128,259,916.21x = 176,993,942.40 × 69,521,320.15 - Step 4: Simplify right side
128,259,916.21x = 12,304,852,534,754,166 - Step 5: Solve for x
x = 12,304,852,534,754,166/128,259,916.21 - Step 6: Final answer
x = 95,936,851.50
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.