Finding the Fourth Proportional to 153,202,989.95, 211,485,361.72 and 102,996,326.57
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Solution
The fourth proportional to 153,202,989.95, 211,485,361.72 and 102,996,326.57 is: 142,178,787.68
Step by Step Solution
- Step 1: Write the proportion equation
153,202,989.95 : 211,485,361.72 = 102,996,326.57 : x - Step 2: Convert to fraction form
153,202,989.95/211,485,361.72 = 102,996,326.57/x - Step 3: Cross multiply
153,202,989.95x = 211,485,361.72 × 102,996,326.57 - Step 4: Simplify right side
153,202,989.95x = 21,782,215,381,141,680 - Step 5: Solve for x
x = 21,782,215,381,141,680/153,202,989.95 - Step 6: Final answer
x = 142,178,787.68
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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.