Finding the Fourth Proportional to 121,694,136.50, 167,938,055.99 and 65,939,513.79
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Solution
The fourth proportional to 121,694,136.50, 167,938,055.99 and 65,939,513.79 is: 90,996,609.02
Step by Step Solution
- Step 1: Write the proportion equation
121,694,136.50 : 167,938,055.99 = 65,939,513.79 : x - Step 2: Convert to fraction form
121,694,136.50/167,938,055.99 = 65,939,513.79/x - Step 3: Cross multiply
121,694,136.50x = 167,938,055.99 × 65,939,513.79 - Step 4: Simplify right side
121,694,136.50x = 11,073,753,758,488,700 - Step 5: Solve for x
x = 11,073,753,758,488,700/121,694,136.50 - Step 6: Final answer
x = 90,996,609.02
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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.