Finding the Fourth Proportional to 138,708,444.18, 191,417,649.48 and 76,832,768.56
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Solution
The fourth proportional to 138,708,444.18, 191,417,649.48 and 76,832,768.56 is: 106,029,218.68
Step by Step Solution
- Step 1: Write the proportion equation
138,708,444.18 : 191,417,649.48 = 76,832,768.56 : x - Step 2: Convert to fraction form
138,708,444.18/191,417,649.48 = 76,832,768.56/x - Step 3: Cross multiply
138,708,444.18x = 191,417,649.48 × 76,832,768.56 - Step 4: Simplify right side
138,708,444.18x = 14,707,147,960,796,044 - Step 5: Solve for x
x = 14,707,147,960,796,044/138,708,444.18 - Step 6: Final answer
x = 106,029,218.68
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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.