Finding the Fourth Proportional to 121,513,231.68, 167,687,648.64 and 65,758,611.84
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Solution
The fourth proportional to 121,513,231.68, 167,687,648.64 and 65,758,611.84 is: 90,746,553.65
Step by Step Solution
- Step 1: Write the proportion equation
121,513,231.68 : 167,687,648.64 = 65,758,611.84 : x - Step 2: Convert to fraction form
121,513,231.68/167,687,648.64 = 65,758,611.84/x - Step 3: Cross multiply
121,513,231.68x = 167,687,648.64 × 65,758,611.84 - Step 4: Simplify right side
121,513,231.68x = 11,026,906,997,280,064 - Step 5: Solve for x
x = 11,026,906,997,280,064/121,513,231.68 - Step 6: Final answer
x = 90,746,553.65
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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.