Finding the Fourth Proportional to 105,239,193.68, 145,230,669.84 and 58,831,403.60
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Solution
The fourth proportional to 105,239,193.68, 145,230,669.84 and 58,831,403.60 is: 81,187,662.63
Step by Step Solution
- Step 1: Write the proportion equation
105,239,193.68 : 145,230,669.84 = 58,831,403.60 : x - Step 2: Convert to fraction form
105,239,193.68/145,230,669.84 = 58,831,403.60/x - Step 3: Cross multiply
105,239,193.68x = 145,230,669.84 × 58,831,403.60 - Step 4: Simplify right side
105,239,193.68x = 8,544,124,152,455,388 - Step 5: Solve for x
x = 8,544,124,152,455,388/105,239,193.68 - Step 6: Final answer
x = 81,187,662.63
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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.