Finding the Fourth Proportional to 138,642,119.68, 191,332,102.32 and 76,762,456.48
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Solution
The fourth proportional to 138,642,119.68, 191,332,102.32 and 76,762,456.48 is: 105,935,499.34
Step by Step Solution
- Step 1: Write the proportion equation
138,642,119.68 : 191,332,102.32 = 76,762,456.48 : x - Step 2: Convert to fraction form
138,642,119.68/191,332,102.32 = 76,762,456.48/x - Step 3: Cross multiply
138,642,119.68x = 191,332,102.32 × 76,762,456.48 - Step 4: Simplify right side
138,642,119.68x = 14,687,122,177,565,908 - Step 5: Solve for x
x = 14,687,122,177,565,908/138,642,119.68 - Step 6: Final answer
x = 105,935,499.34
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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.