Finding the Fourth Proportional to 128,115,871.95, 192,155,145.53 and 37,229,983.95
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Solution
The fourth proportional to 128,115,871.95, 192,155,145.53 and 37,229,983.95 is: 55,839,552.70
Step by Step Solution
- Step 1: Write the proportion equation
128,115,871.95 : 192,155,145.53 = 37,229,983.95 : x - Step 2: Convert to fraction form
128,115,871.95/192,155,145.53 = 37,229,983.95/x - Step 3: Cross multiply
128,115,871.95x = 192,155,145.53 × 37,229,983.95 - Step 4: Simplify right side
128,115,871.95x = 7,153,932,983,805,665 - Step 5: Solve for x
x = 7,153,932,983,805,665/128,115,871.95 - Step 6: Final answer
x = 55,839,552.70
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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.