Finding the Fourth Proportional to 122,521.68, 183,782.16 and 39,415.68
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Solution
The fourth proportional to 122,521.68, 183,782.16 and 39,415.68 is: 59,123.40
Step by Step Solution
- Step 1: Write the proportion equation
122,521.68 : 183,782.16 = 39,415.68 : x - Step 2: Convert to fraction form
122,521.68/183,782.16 = 39,415.68/x - Step 3: Cross multiply
122,521.68x = 183,782.16 × 39,415.68 - Step 4: Simplify right side
122,521.68x = 7,243,898,808.27 - Step 5: Solve for x
x = 7,243,898,808.27/122,521.68 - Step 6: Final answer
x = 59,123.40
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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.