Finding the Fourth Proportional to 124,749,123.12, 186,758,795.88 and 72,774,805.68
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Solution
The fourth proportional to 124,749,123.12, 186,758,795.88 and 72,774,805.68 is: 108,949,343.60
Step by Step Solution
- Step 1: Write the proportion equation
124,749,123.12 : 186,758,795.88 = 72,774,805.68 : x - Step 2: Convert to fraction form
124,749,123.12/186,758,795.88 = 72,774,805.68/x - Step 3: Cross multiply
124,749,123.12x = 186,758,795.88 × 72,774,805.68 - Step 4: Simplify right side
124,749,123.12x = 13,591,335,079,197,786 - Step 5: Solve for x
x = 13,591,335,079,197,786/124,749,123.12 - Step 6: Final answer
x = 108,949,343.60
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.