Finding the Fourth Proportional to 121,101,121.20, 181,651,681.80 and 99,577,760.70
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Solution
The fourth proportional to 121,101,121.20, 181,651,681.80 and 99,577,760.70 is: 149,366,641.05
Step by Step Solution
- Step 1: Write the proportion equation
121,101,121.20 : 181,651,681.80 = 99,577,760.70 : x - Step 2: Convert to fraction form
121,101,121.20/181,651,681.80 = 99,577,760.70/x - Step 3: Cross multiply
121,101,121.20x = 181,651,681.80 × 99,577,760.70 - Step 4: Simplify right side
121,101,121.20x = 18,088,467,701,032,948 - Step 5: Solve for x
x = 18,088,467,701,032,948/121,101,121.20 - Step 6: Final answer
x = 149,366,641.05
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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.