Finding the Fourth Proportional to 139,402.71, 209,029.95 and 55,159.47
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Solution
The fourth proportional to 139,402.71, 209,029.95 and 55,159.47 is: 82,709.88
Step by Step Solution
- Step 1: Write the proportion equation
139,402.71 : 209,029.95 = 55,159.47 : x - Step 2: Convert to fraction form
139,402.71/209,029.95 = 55,159.47/x - Step 3: Cross multiply
139,402.71x = 209,029.95 × 55,159.47 - Step 4: Simplify right side
139,402.71x = 11,529,981,256.13 - Step 5: Solve for x
x = 11,529,981,256.13/139,402.71 - Step 6: Final answer
x = 82,709.88
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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.