Finding the Fourth Proportional to 128,112,043.36, 192,128,320.62 and 46,220,275.84
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Solution
The fourth proportional to 128,112,043.36, 192,128,320.62 and 46,220,275.84 is: 69,316,074.76
Step by Step Solution
- Step 1: Write the proportion equation
128,112,043.36 : 192,128,320.62 = 46,220,275.84 : x - Step 2: Convert to fraction form
128,112,043.36/192,128,320.62 = 46,220,275.84/x - Step 3: Cross multiply
128,112,043.36x = 192,128,320.62 × 46,220,275.84 - Step 4: Simplify right side
128,112,043.36x = 8,880,223,975,732,361 - Step 5: Solve for x
x = 8,880,223,975,732,361/128,112,043.36 - Step 6: Final answer
x = 69,316,074.76
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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.