Finding the Fourth Proportional to 100,037,162.12, 138,048,318.72 and 55,385,124.26
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Solution
The fourth proportional to 100,037,162.12, 138,048,318.72 and 55,385,124.26 is: 76,429,829.92
Step by Step Solution
- Step 1: Write the proportion equation
100,037,162.12 : 138,048,318.72 = 55,385,124.26 : x - Step 2: Convert to fraction form
100,037,162.12/138,048,318.72 = 55,385,124.26/x - Step 3: Cross multiply
100,037,162.12x = 138,048,318.72 × 55,385,124.26 - Step 4: Simplify right side
100,037,162.12x = 7,645,823,286,536,405 - Step 5: Solve for x
x = 7,645,823,286,536,405/100,037,162.12 - Step 6: Final answer
x = 76,429,829.92
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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.