Finding the Fourth Proportional to 108,145,484.37, 149,438,733.55 and 78,725,740.99
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Solution
The fourth proportional to 108,145,484.37, 149,438,733.55 and 78,725,740.99 is: 108,785,633.53
Step by Step Solution
- Step 1: Write the proportion equation
108,145,484.37 : 149,438,733.55 = 78,725,740.99 : x - Step 2: Convert to fraction form
108,145,484.37/149,438,733.55 = 78,725,740.99/x - Step 3: Cross multiply
108,145,484.37x = 149,438,733.55 × 78,725,740.99 - Step 4: Simplify right side
108,145,484.37x = 11,764,675,030,583,730 - Step 5: Solve for x
x = 11,764,675,030,583,730/108,145,484.37 - Step 6: Final answer
x = 108,785,633.53
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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.