Finding the Fourth Proportional to 121,407,798.51, 167,436,878.22 and 86,055,678.99
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Solution
The fourth proportional to 121,407,798.51, 167,436,878.22 and 86,055,678.99 is: 118,681,785.03
Step by Step Solution
- Step 1: Write the proportion equation
121,407,798.51 : 167,436,878.22 = 86,055,678.99 : x - Step 2: Convert to fraction form
121,407,798.51/167,436,878.22 = 86,055,678.99/x - Step 3: Cross multiply
121,407,798.51x = 167,436,878.22 × 86,055,678.99 - Step 4: Simplify right side
121,407,798.51x = 14,408,894,243,188,042 - Step 5: Solve for x
x = 14,408,894,243,188,042/121,407,798.51 - Step 6: Final answer
x = 118,681,785.03
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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.