Finding the Fourth Proportional to 116,928,717.49, 161,195,282.41 and 79,711,237.23
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Solution
The fourth proportional to 116,928,717.49, 161,195,282.41 and 79,711,237.23 is: 109,888,106.81
Step by Step Solution
- Step 1: Write the proportion equation
116,928,717.49 : 161,195,282.41 = 79,711,237.23 : x - Step 2: Convert to fraction form
116,928,717.49/161,195,282.41 = 79,711,237.23/x - Step 3: Cross multiply
116,928,717.49x = 161,195,282.41 × 79,711,237.23 - Step 4: Simplify right side
116,928,717.49x = 12,849,075,396,540,356 - Step 5: Solve for x
x = 12,849,075,396,540,356/116,928,717.49 - Step 6: Final answer
x = 109,888,106.81
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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.