Finding the Fourth Proportional to 128,259,905.10, 176,993,927.19 and 69,521,309.12
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Solution
The fourth proportional to 128,259,905.10, 176,993,927.19 and 69,521,309.12 is: 95,936,836.33
Step by Step Solution
- Step 1: Write the proportion equation
128,259,905.10 : 176,993,927.19 = 69,521,309.12 : x - Step 2: Convert to fraction form
128,259,905.10/176,993,927.19 = 69,521,309.12/x - Step 3: Cross multiply
128,259,905.10x = 176,993,927.19 × 69,521,309.12 - Step 4: Simplify right side
128,259,905.10x = 12,304,849,523,653,792 - Step 5: Solve for x
x = 12,304,849,523,653,792/128,259,905.10 - Step 6: Final answer
x = 95,936,836.33
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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.