Finding the Fourth Proportional to 128,393,658.84, 177,183,229.50 and 73,390,695.96
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Solution
The fourth proportional to 128,393,658.84, 177,183,229.50 and 73,390,695.96 is: 101,279,149.16
Step by Step Solution
- Step 1: Write the proportion equation
128,393,658.84 : 177,183,229.50 = 73,390,695.96 : x - Step 2: Convert to fraction form
128,393,658.84/177,183,229.50 = 73,390,695.96/x - Step 3: Cross multiply
128,393,658.84x = 177,183,229.50 × 73,390,695.96 - Step 4: Simplify right side
128,393,658.84x = 13,003,600,525,445,402 - Step 5: Solve for x
x = 13,003,600,525,445,402/128,393,658.84 - Step 6: Final answer
x = 101,279,149.16
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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.