Finding the Fourth Proportional to 128,125,086.90, 176,810,434.61 and 69,387,274.74
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Solution
The fourth proportional to 128,125,086.90, 176,810,434.61 and 69,387,274.74 is: 95,753,255.67
Step by Step Solution
- Step 1: Write the proportion equation
128,125,086.90 : 176,810,434.61 = 69,387,274.74 : x - Step 2: Convert to fraction form
128,125,086.90/176,810,434.61 = 69,387,274.74/x - Step 3: Cross multiply
128,125,086.90x = 176,810,434.61 × 69,387,274.74 - Step 4: Simplify right side
128,125,086.90x = 12,268,394,203,182,874 - Step 5: Solve for x
x = 12,268,394,203,182,874/128,125,086.90 - Step 6: Final answer
x = 95,753,255.67
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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.