Finding the Fourth Proportional to 128,002,048.35, 176,643,133.78 and 69,265,343.75
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Solution
The fourth proportional to 128,002,048.35, 176,643,133.78 and 69,265,343.75 is: 95,586,340.53
Step by Step Solution
- Step 1: Write the proportion equation
128,002,048.35 : 176,643,133.78 = 69,265,343.75 : x - Step 2: Convert to fraction form
128,002,048.35/176,643,133.78 = 69,265,343.75/x - Step 3: Cross multiply
128,002,048.35x = 176,643,133.78 × 69,265,343.75 - Step 4: Simplify right side
128,002,048.35x = 12,235,247,381,954,970 - Step 5: Solve for x
x = 12,235,247,381,954,970/128,002,048.35 - Step 6: Final answer
x = 95,586,340.53
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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.