Finding the Fourth Proportional to 139,248.90, 208,846.71 and 39,384.99
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Solution
The fourth proportional to 139,248.90, 208,846.71 and 39,384.99 is: 59,069.95
Step by Step Solution
- Step 1: Write the proportion equation
139,248.90 : 208,846.71 = 39,384.99 : x - Step 2: Convert to fraction form
139,248.90/208,846.71 = 39,384.99/x - Step 3: Cross multiply
139,248.90x = 208,846.71 × 39,384.99 - Step 4: Simplify right side
139,248.90x = 8,225,425,584.88 - Step 5: Solve for x
x = 8,225,425,584.88/139,248.90 - Step 6: Final answer
x = 59,069.95
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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.