Finding the Fourth Proportional to 128,260,658.42, 192,321,777.68 and 58,192,644.71
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Solution
The fourth proportional to 128,260,658.42, 192,321,777.68 and 58,192,644.71 is: 87,257,566.09
Step by Step Solution
- Step 1: Write the proportion equation
128,260,658.42 : 192,321,777.68 = 58,192,644.71 : x - Step 2: Convert to fraction form
128,260,658.42/192,321,777.68 = 58,192,644.71/x - Step 3: Cross multiply
128,260,658.42x = 192,321,777.68 × 58,192,644.71 - Step 4: Simplify right side
128,260,658.42x = 11,191,712,879,262,954 - Step 5: Solve for x
x = 11,191,712,879,262,954/128,260,658.42 - Step 6: Final answer
x = 87,257,566.09
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1.5x scale
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.