Finding the Fourth Proportional to 128,112,040.36, 192,128,316.12 and 46,220,272.84
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Solution
The fourth proportional to 128,112,040.36, 192,128,316.12 and 46,220,272.84 is: 69,316,070.26
Step by Step Solution
- Step 1: Write the proportion equation
128,112,040.36 : 192,128,316.12 = 46,220,272.84 : x - Step 2: Convert to fraction form
128,112,040.36/192,128,316.12 = 46,220,272.84/x - Step 3: Cross multiply
128,112,040.36x = 192,128,316.12 × 46,220,272.84 - Step 4: Simplify right side
128,112,040.36x = 8,880,223,191,356,171 - Step 5: Solve for x
x = 8,880,223,191,356,171/128,112,040.36 - Step 6: Final answer
x = 69,316,070.26
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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.