Finding the Fourth Proportional to 117,267,961.05, 161,762,550.99 and 73,138,345.56
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Solution
The fourth proportional to 117,267,961.05, 161,762,550.99 and 73,138,345.56 is: 100,888,983.21
Step by Step Solution
- Step 1: Write the proportion equation
117,267,961.05 : 161,762,550.99 = 73,138,345.56 : x - Step 2: Convert to fraction form
117,267,961.05/161,762,550.99 = 73,138,345.56/x - Step 3: Cross multiply
117,267,961.05x = 161,762,550.99 × 73,138,345.56 - Step 4: Simplify right side
117,267,961.05x = 11,831,045,352,973,742 - Step 5: Solve for x
x = 11,831,045,352,973,742/117,267,961.05 - Step 6: Final answer
x = 100,888,983.21
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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.