Finding the Fourth Proportional to 121,438.70, 181,866.45 and 98,110.70
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Solution
The fourth proportional to 121,438.70, 181,866.45 and 98,110.70 is: 146,930.47
Step by Step Solution
- Step 1: Write the proportion equation
121,438.70 : 181,866.45 = 98,110.70 : x - Step 2: Convert to fraction form
121,438.70/181,866.45 = 98,110.70/x - Step 3: Cross multiply
121,438.70x = 181,866.45 × 98,110.70 - Step 4: Simplify right side
121,438.70x = 17,843,044,716.02 - Step 5: Solve for x
x = 17,843,044,716.02/121,438.70 - Step 6: Final answer
x = 146,930.47
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.