Finding the Fourth Proportional to 124,408,272.09, 171,683,489.35 and 69,404,128.59
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Solution
The fourth proportional to 124,408,272.09, 171,683,489.35 and 69,404,128.59 is: 95,777,738.66
Step by Step Solution
- Step 1: Write the proportion equation
124,408,272.09 : 171,683,489.35 = 69,404,128.59 : x - Step 2: Convert to fraction form
124,408,272.09/171,683,489.35 = 69,404,128.59/x - Step 3: Cross multiply
124,408,272.09x = 171,683,489.35 × 69,404,128.59 - Step 4: Simplify right side
124,408,272.09x = 11,915,542,972,357,864 - Step 5: Solve for x
x = 11,915,542,972,357,864/124,408,272.09 - Step 6: Final answer
x = 95,777,738.66
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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.