Finding the Fourth Proportional to 128,367,039.30, 177,146,332.64 and 69,629,633.49
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Solution
The fourth proportional to 128,367,039.30, 177,146,332.64 and 69,629,633.49 is: 96,088,795.72
Step by Step Solution
- Step 1: Write the proportion equation
128,367,039.30 : 177,146,332.64 = 69,629,633.49 : x - Step 2: Convert to fraction form
128,367,039.30/177,146,332.64 = 69,629,633.49/x - Step 3: Cross multiply
128,367,039.30x = 177,146,332.64 × 69,629,633.49 - Step 4: Simplify right side
128,367,039.30x = 12,334,634,216,398,086 - Step 5: Solve for x
x = 12,334,634,216,398,086/128,367,039.30 - Step 6: Final answer
x = 96,088,795.72
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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.