Finding the Fourth Proportional to 124,139,721.42, 171,318,130.65 and 69,135,577.92
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Solution
The fourth proportional to 124,139,721.42, 171,318,130.65 and 69,135,577.92 is: 95,410,057.60
Step by Step Solution
- Step 1: Write the proportion equation
124,139,721.42 : 171,318,130.65 = 69,135,577.92 : x - Step 2: Convert to fraction form
124,139,721.42/171,318,130.65 = 69,135,577.92/x - Step 3: Cross multiply
124,139,721.42x = 171,318,130.65 × 69,135,577.92 - Step 4: Simplify right side
124,139,721.42x = 11,844,177,970,661,816 - Step 5: Solve for x
x = 11,844,177,970,661,816/124,139,721.42 - Step 6: Final answer
x = 95,410,057.60
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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.