Finding the Fourth Proportional to 137,240,608.50, 189,395,330.55 and 74,519,350.05
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Solution
The fourth proportional to 137,240,608.50, 189,395,330.55 and 74,519,350.05 is: 102,838,489.93
Step by Step Solution
- Step 1: Write the proportion equation
137,240,608.50 : 189,395,330.55 = 74,519,350.05 : x - Step 2: Convert to fraction form
137,240,608.50/189,395,330.55 = 74,519,350.05/x - Step 3: Cross multiply
137,240,608.50x = 189,395,330.55 × 74,519,350.05 - Step 4: Simplify right side
137,240,608.50x = 14,113,616,935,090,910 - Step 5: Solve for x
x = 14,113,616,935,090,910/137,240,608.50 - Step 6: Final answer
x = 102,838,489.93
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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.