Finding the Fourth Proportional to 100,382,021.80, 150,573,032.70 and 74,872,853.80
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Solution
The fourth proportional to 100,382,021.80, 150,573,032.70 and 74,872,853.80 is: 112,309,280.70
Step by Step Solution
- Step 1: Write the proportion equation
100,382,021.80 : 150,573,032.70 = 74,872,853.80 : x - Step 2: Convert to fraction form
100,382,021.80/150,573,032.70 = 74,872,853.80/x - Step 3: Cross multiply
100,382,021.80x = 150,573,032.70 × 74,872,853.80 - Step 4: Simplify right side
100,382,021.80x = 11,273,832,663,569,718 - Step 5: Solve for x
x = 11,273,832,663,569,718/100,382,021.80 - Step 6: Final answer
x = 112,309,280.70
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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.