Finding the Fourth Proportional to 155,871,246.48, 215,105,829.84 and 100,962,674.88
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Solution
The fourth proportional to 155,871,246.48, 215,105,829.84 and 100,962,674.88 is: 139,330,764.68
Step by Step Solution
- Step 1: Write the proportion equation
155,871,246.48 : 215,105,829.84 = 100,962,674.88 : x - Step 2: Convert to fraction form
155,871,246.48/215,105,829.84 = 100,962,674.88/x - Step 3: Cross multiply
155,871,246.48x = 215,105,829.84 × 100,962,674.88 - Step 4: Simplify right side
155,871,246.48x = 21,717,659,962,928,520 - Step 5: Solve for x
x = 21,717,659,962,928,520/155,871,246.48 - Step 6: Final answer
x = 139,330,764.68
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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.