Finding the Fourth Proportional to 138,708,446.18, 191,417,652.24 and 76,832,770.56
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Solution
The fourth proportional to 138,708,446.18, 191,417,652.24 and 76,832,770.56 is: 106,029,221.44
Step by Step Solution
- Step 1: Write the proportion equation
138,708,446.18 : 191,417,652.24 = 76,832,770.56 : x - Step 2: Convert to fraction form
138,708,446.18/191,417,652.24 = 76,832,770.56/x - Step 3: Cross multiply
138,708,446.18x = 191,417,652.24 × 76,832,770.56 - Step 4: Simplify right side
138,708,446.18x = 14,707,148,555,689,792 - Step 5: Solve for x
x = 14,707,148,555,689,792/138,708,446.18 - Step 6: Final answer
x = 106,029,221.44
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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.