Finding the Fourth Proportional to 121,502,451.87, 167,673,827.93 and 65,747,872.81
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Solution
The fourth proportional to 121,502,451.87, 167,673,827.93 and 65,747,872.81 is: 90,732,304.93
Step by Step Solution
- Step 1: Write the proportion equation
121,502,451.87 : 167,673,827.93 = 65,747,872.81 : x - Step 2: Convert to fraction form
121,502,451.87/167,673,827.93 = 65,747,872.81/x - Step 3: Cross multiply
121,502,451.87x = 167,673,827.93 × 65,747,872.81 - Step 4: Simplify right side
121,502,451.87x = 11,024,197,512,270,738 - Step 5: Solve for x
x = 11,024,197,512,270,738/121,502,451.87 - Step 6: Final answer
x = 90,732,304.93
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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.