Finding the Fourth Proportional to 128,467,772.20, 192,637,895.10 and 46,583,381.80
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Solution
The fourth proportional to 128,467,772.20, 192,637,895.10 and 46,583,381.80 is: 69,851,951.68
Step by Step Solution
- Step 1: Write the proportion equation
128,467,772.20 : 192,637,895.10 = 46,583,381.80 : x - Step 2: Convert to fraction form
128,467,772.20/192,637,895.10 = 46,583,381.80/x - Step 3: Cross multiply
128,467,772.20x = 192,637,895.10 × 46,583,381.80 - Step 4: Simplify right side
128,467,772.20x = 8,973,724,616,591,648 - Step 5: Solve for x
x = 8,973,724,616,591,648/128,467,772.20 - Step 6: Final answer
x = 69,851,951.68
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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.