Finding the Fourth Proportional to 128,259,916.71, 176,993,943.09 and 69,521,320.66
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Solution
The fourth proportional to 128,259,916.71, 176,993,943.09 and 69,521,320.66 is: 95,936,852.20
Step by Step Solution
- Step 1: Write the proportion equation
128,259,916.71 : 176,993,943.09 = 69,521,320.66 : x - Step 2: Convert to fraction form
128,259,916.71/176,993,943.09 = 69,521,320.66/x - Step 3: Cross multiply
128,259,916.71x = 176,993,943.09 × 69,521,320.66 - Step 4: Simplify right side
128,259,916.71x = 12,304,852,671,552,712 - Step 5: Solve for x
x = 12,304,852,671,552,712/128,259,916.71 - Step 6: Final answer
x = 95,936,852.20
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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.