Finding the Fourth Proportional to 149,995,830.78, 206,992,721.66 and 83,014,920.81
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Solution
The fourth proportional to 149,995,830.78, 206,992,721.66 and 83,014,920.81 is: 114,559,746.81
Step by Step Solution
- Step 1: Write the proportion equation
149,995,830.78 : 206,992,721.66 = 83,014,920.81 : x - Step 2: Convert to fraction form
149,995,830.78/206,992,721.66 = 83,014,920.81/x - Step 3: Cross multiply
149,995,830.78x = 206,992,721.66 × 83,014,920.81 - Step 4: Simplify right side
149,995,830.78x = 17,183,484,396,436,198 - Step 5: Solve for x
x = 17,183,484,396,436,198/149,995,830.78 - Step 6: Final answer
x = 114,559,746.81
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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.