Finding the Fourth Proportional to 128,065,751.97, 176,730,794.77 and 69,328,415.19
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Solution
The fourth proportional to 128,065,751.97, 176,730,794.77 and 69,328,415.19 is: 95,673,243.85
Step by Step Solution
- Step 1: Write the proportion equation
128,065,751.97 : 176,730,794.77 = 69,328,415.19 : x - Step 2: Convert to fraction form
128,065,751.97/176,730,794.77 = 69,328,415.19/x - Step 3: Cross multiply
128,065,751.97x = 176,730,794.77 × 69,328,415.19 - Step 4: Simplify right side
128,065,751.97x = 12,252,465,916,673,240 - Step 5: Solve for x
x = 12,252,465,916,673,240/128,065,751.97 - Step 6: Final answer
x = 95,673,243.85
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.