Finding the Fourth Proportional to 145,163,678.70, 217,745,518.05 and 91,415,966.70
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Solution
The fourth proportional to 145,163,678.70, 217,745,518.05 and 91,415,966.70 is: 137,123,950.05
Step by Step Solution
- Step 1: Write the proportion equation
145,163,678.70 : 217,745,518.05 = 91,415,966.70 : x - Step 2: Convert to fraction form
145,163,678.70/217,745,518.05 = 91,415,966.70/x - Step 3: Cross multiply
145,163,678.70x = 217,745,518.05 × 91,415,966.70 - Step 4: Simplify right side
145,163,678.70x = 19,905,417,027,133,052 - Step 5: Solve for x
x = 19,905,417,027,133,052/145,163,678.70 - Step 6: Final answer
x = 137,123,950.05
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.